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Finding the Fourth Proportional to 138,049.52, 207,034.25 and 53,790.89

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Solution

The fourth proportional to 138,049.52, 207,034.25 and 53,790.89 is: 80,670.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,049.52 : 207,034.25 = 53,790.89 : x
  2. Step 2: Convert to fraction form
    138,049.52/207,034.25 = 53,790.89/x
  3. Step 3: Cross multiply
    138,049.52x = 207,034.25 × 53,790.89
  4. Step 4: Simplify right side
    138,049.52x = 11,136,555,263.86
  5. Step 5: Solve for x
    x = 11,136,555,263.86/138,049.52
  6. Step 6: Final answer
    x = 80,670.73

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1.5x scale

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.