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Finding the Fourth Proportional to 134,761.20, 202,141.80 and 72,553.20

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Solution

The fourth proportional to 134,761.20, 202,141.80 and 72,553.20 is: 108,829.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,761.20 : 202,141.80 = 72,553.20 : x
  2. Step 2: Convert to fraction form
    134,761.20/202,141.80 = 72,553.20/x
  3. Step 3: Cross multiply
    134,761.20x = 202,141.80 × 72,553.20
  4. Step 4: Simplify right side
    134,761.20x = 14,666,034,443.76
  5. Step 5: Solve for x
    x = 14,666,034,443.76/134,761.20
  6. Step 6: Final answer
    x = 108,829.80

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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.