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Finding the Fourth Proportional to 139,207.88, 192,107.01 and 75,545.69

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Solution

The fourth proportional to 139,207.88, 192,107.01 and 75,545.69 is: 104,253.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,207.88 : 192,107.01 = 75,545.69 : x
  2. Step 2: Convert to fraction form
    139,207.88/192,107.01 = 75,545.69/x
  3. Step 3: Cross multiply
    139,207.88x = 192,107.01 × 75,545.69
  4. Step 4: Simplify right side
    139,207.88x = 14,512,855,663.75
  5. Step 5: Solve for x
    x = 14,512,855,663.75/139,207.88
  6. Step 6: Final answer
    x = 104,253.12

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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.