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Finding the Fourth Proportional to 207,147.33, 285,902.58 and 129,658.92

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Solution

The fourth proportional to 207,147.33, 285,902.58 and 129,658.92 is: 178,953.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,147.33 : 285,902.58 = 129,658.92 : x
  2. Step 2: Convert to fraction form
    207,147.33/285,902.58 = 129,658.92/x
  3. Step 3: Cross multiply
    207,147.33x = 285,902.58 × 129,658.92
  4. Step 4: Simplify right side
    207,147.33x = 37,069,819,748.01
  5. Step 5: Solve for x
    x = 37,069,819,748.01/207,147.33
  6. Step 6: Final answer
    x = 178,953.89

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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.