Home / 107,540.10-161,310.15-90,432.90

Finding the Fourth Proportional to 107,540.10, 161,310.15 and 90,432.90

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Solution

The fourth proportional to 107,540.10, 161,310.15 and 90,432.90 is: 135,649.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,540.10 : 161,310.15 = 90,432.90 : x
  2. Step 2: Convert to fraction form
    107,540.10/161,310.15 = 90,432.90/x
  3. Step 3: Cross multiply
    107,540.10x = 161,310.15 × 90,432.90
  4. Step 4: Simplify right side
    107,540.10x = 14,587,744,663.94
  5. Step 5: Solve for x
    x = 14,587,744,663.94/107,540.10
  6. Step 6: Final answer
    x = 135,649.35

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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.