Home / 185,645.40-278,468.10-45,402.20

Finding the Fourth Proportional to 185,645.40, 278,468.10 and 45,402.20

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Solution

The fourth proportional to 185,645.40, 278,468.10 and 45,402.20 is: 68,103.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,645.40 : 278,468.10 = 45,402.20 : x
  2. Step 2: Convert to fraction form
    185,645.40/278,468.10 = 45,402.20/x
  3. Step 3: Cross multiply
    185,645.40x = 278,468.10 × 45,402.20
  4. Step 4: Simplify right side
    185,645.40x = 12,643,064,369.82
  5. Step 5: Solve for x
    x = 12,643,064,369.82/185,645.40
  6. Step 6: Final answer
    x = 68,103.30

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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.