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Finding the Fourth Proportional to 102,687.92, 154,030.68 and 36,127.80

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Solution

The fourth proportional to 102,687.92, 154,030.68 and 36,127.80 is: 54,191.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,687.92 : 154,030.68 = 36,127.80 : x
  2. Step 2: Convert to fraction form
    102,687.92/154,030.68 = 36,127.80/x
  3. Step 3: Cross multiply
    102,687.92x = 154,030.68 × 36,127.80
  4. Step 4: Simplify right side
    102,687.92x = 5,564,789,600.90
  5. Step 5: Solve for x
    x = 5,564,789,600.90/102,687.92
  6. Step 6: Final answer
    x = 54,191.28

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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.