Home / 115,280.90-172,921.35-70,763.30

Finding the Fourth Proportional to 115,280.90, 172,921.35 and 70,763.30

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Solution

The fourth proportional to 115,280.90, 172,921.35 and 70,763.30 is: 106,144.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,280.90 : 172,921.35 = 70,763.30 : x
  2. Step 2: Convert to fraction form
    115,280.90/172,921.35 = 70,763.30/x
  3. Step 3: Cross multiply
    115,280.90x = 172,921.35 × 70,763.30
  4. Step 4: Simplify right side
    115,280.90x = 12,236,485,366.46
  5. Step 5: Solve for x
    x = 12,236,485,366.46/115,280.90
  6. Step 6: Final answer
    x = 106,144.95

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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.