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Finding the Fourth Proportional to 74,358.73, 102,816.89 and 73,156.92

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Solution

The fourth proportional to 74,358.73, 102,816.89 and 73,156.92 is: 101,155.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,358.73 : 102,816.89 = 73,156.92 : x
  2. Step 2: Convert to fraction form
    74,358.73/102,816.89 = 73,156.92/x
  3. Step 3: Cross multiply
    74,358.73x = 102,816.89 × 73,156.92
  4. Step 4: Simplify right side
    74,358.73x = 7,521,766,996.38
  5. Step 5: Solve for x
    x = 7,521,766,996.38/74,358.73
  6. Step 6: Final answer
    x = 101,155.13

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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.