Home / 115,033,014,909.30-172,549,522,363.95-87,138,739,701.30

Finding the Fourth Proportional to 115,033,014,909.30, 172,549,522,363.95 and 87,138,739,701.30

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Solution

The fourth proportional to 115,033,014,909.30, 172,549,522,363.95 and 87,138,739,701.30 is: 130,708,109,551.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,033,014,909.30 : 172,549,522,363.95 = 87,138,739,701.30 : x
  2. Step 2: Convert to fraction form
    115,033,014,909.30/172,549,522,363.95 = 87,138,739,701.30/x
  3. Step 3: Cross multiply
    115,033,014,909.30x = 172,549,522,363.95 × 87,138,739,701.30
  4. Step 4: Simplify right side
    115,033,014,909.30x = 15,035,747,914,855,883,997,184
  5. Step 5: Solve for x
    x = 15,035,747,914,855,883,997,184/115,033,014,909.30
  6. Step 6: Final answer
    x = 130,708,109,551.95

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.