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Finding the Fourth Proportional to 143,151.68, 197,545.56 and 79,487.84

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Solution

The fourth proportional to 143,151.68, 197,545.56 and 79,487.84 is: 109,691.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,151.68 : 197,545.56 = 79,487.84 : x
  2. Step 2: Convert to fraction form
    143,151.68/197,545.56 = 79,487.84/x
  3. Step 3: Cross multiply
    143,151.68x = 197,545.56 × 79,487.84
  4. Step 4: Simplify right side
    143,151.68x = 15,702,469,865.99
  5. Step 5: Solve for x
    x = 15,702,469,865.99/143,151.68
  6. Step 6: Final answer
    x = 109,691.13

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1.5x scale

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.