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Finding the Fourth Proportional to 108,463.80, 149,678.89 and 60,717.54

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Solution

The fourth proportional to 108,463.80, 149,678.89 and 60,717.54 is: 83,789.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,463.80 : 149,678.89 = 60,717.54 : x
  2. Step 2: Convert to fraction form
    108,463.80/149,678.89 = 60,717.54/x
  3. Step 3: Cross multiply
    108,463.80x = 149,678.89 × 60,717.54
  4. Step 4: Simplify right side
    108,463.80x = 9,088,133,990.73
  5. Step 5: Solve for x
    x = 9,088,133,990.73/108,463.80
  6. Step 6: Final answer
    x = 83,789.56

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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.