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Finding the Fourth Proportional to 192,061.63, 288,123.51 and 72,127.90

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Solution

The fourth proportional to 192,061.63, 288,123.51 and 72,127.90 is: 108,203.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,061.63 : 288,123.51 = 72,127.90 : x
  2. Step 2: Convert to fraction form
    192,061.63/288,123.51 = 72,127.90/x
  3. Step 3: Cross multiply
    192,061.63x = 288,123.51 × 72,127.90
  4. Step 4: Simplify right side
    192,061.63x = 20,781,744,347.56
  5. Step 5: Solve for x
    x = 20,781,744,347.56/192,061.63
  6. Step 6: Final answer
    x = 108,203.52

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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.