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Finding the Fourth Proportional to 138,524.79, 207,798.98 and 43,729.61

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Solution

The fourth proportional to 138,524.79, 207,798.98 and 43,729.61 is: 65,598.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,524.79 : 207,798.98 = 43,729.61 : x
  2. Step 2: Convert to fraction form
    138,524.79/207,798.98 = 43,729.61/x
  3. Step 3: Cross multiply
    138,524.79x = 207,798.98 × 43,729.61
  4. Step 4: Simplify right side
    138,524.79x = 9,086,968,654.65
  5. Step 5: Solve for x
    x = 9,086,968,654.65/138,524.79
  6. Step 6: Final answer
    x = 65,598.14

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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.