Home / 102,132.28-140,942.19-57,420.28

Finding the Fourth Proportional to 102,132.28, 140,942.19 and 57,420.28

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Solution

The fourth proportional to 102,132.28, 140,942.19 and 57,420.28 is: 79,239.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,132.28 : 140,942.19 = 57,420.28 : x
  2. Step 2: Convert to fraction form
    102,132.28/140,942.19 = 57,420.28/x
  3. Step 3: Cross multiply
    102,132.28x = 140,942.19 × 57,420.28
  4. Step 4: Simplify right side
    102,132.28x = 8,092,940,013.61
  5. Step 5: Solve for x
    x = 8,092,940,013.61/102,132.28
  6. Step 6: Final answer
    x = 79,239.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.