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Finding the Fourth Proportional to 99,120.67, 148,601.71 and 51,711.97

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Solution

The fourth proportional to 99,120.67, 148,601.71 and 51,711.97 is: 77,526.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,120.67 : 148,601.71 = 51,711.97 : x
  2. Step 2: Convert to fraction form
    99,120.67/148,601.71 = 51,711.97/x
  3. Step 3: Cross multiply
    99,120.67x = 148,601.71 × 51,711.97
  4. Step 4: Simplify right side
    99,120.67x = 7,684,487,169.47
  5. Step 5: Solve for x
    x = 7,684,487,169.47/99,120.67
  6. Step 6: Final answer
    x = 77,526.59

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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.