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Finding the Fourth Proportional to 123,502.65, 170,424.12 and 69,793.56

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Solution

The fourth proportional to 123,502.65, 170,424.12 and 69,793.56 is: 96,309.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,502.65 : 170,424.12 = 69,793.56 : x
  2. Step 2: Convert to fraction form
    123,502.65/170,424.12 = 69,793.56/x
  3. Step 3: Cross multiply
    123,502.65x = 170,424.12 × 69,793.56
  4. Step 4: Simplify right side
    123,502.65x = 11,894,506,044.67
  5. Step 5: Solve for x
    x = 11,894,506,044.67/123,502.65
  6. Step 6: Final answer
    x = 96,309.72

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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.