Home / 102,542.20-153,740.40-39,337.90

Finding the Fourth Proportional to 102,542.20, 153,740.40 and 39,337.90

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Solution

The fourth proportional to 102,542.20, 153,740.40 and 39,337.90 is: 58,978.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,542.20 : 153,740.40 = 39,337.90 : x
  2. Step 2: Convert to fraction form
    102,542.20/153,740.40 = 39,337.90/x
  3. Step 3: Cross multiply
    102,542.20x = 153,740.40 × 39,337.90
  4. Step 4: Simplify right side
    102,542.20x = 6,047,824,481.16
  5. Step 5: Solve for x
    x = 6,047,824,481.16/102,542.20
  6. Step 6: Final answer
    x = 58,978.88

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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.