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Finding the Fourth Proportional to 120,375.72, 180,526.14 and 40,398.12

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Solution

The fourth proportional to 120,375.72, 180,526.14 and 40,398.12 is: 60,584.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,375.72 : 180,526.14 = 40,398.12 : x
  2. Step 2: Convert to fraction form
    120,375.72/180,526.14 = 40,398.12/x
  3. Step 3: Cross multiply
    120,375.72x = 180,526.14 × 40,398.12
  4. Step 4: Simplify right side
    120,375.72x = 7,292,916,666.86
  5. Step 5: Solve for x
    x = 7,292,916,666.86/120,375.72
  6. Step 6: Final answer
    x = 60,584.62

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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.