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Finding the Fourth Proportional to 103,614.52, 155,421.76 and 68,545.96

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Solution

The fourth proportional to 103,614.52, 155,421.76 and 68,545.96 is: 102,818.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,614.52 : 155,421.76 = 68,545.96 : x
  2. Step 2: Convert to fraction form
    103,614.52/155,421.76 = 68,545.96/x
  3. Step 3: Cross multiply
    103,614.52x = 155,421.76 × 68,545.96
  4. Step 4: Simplify right side
    103,614.52x = 10,653,533,744.09
  5. Step 5: Solve for x
    x = 10,653,533,744.09/103,614.52
  6. Step 6: Final answer
    x = 102,818.93

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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.