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Finding the Fourth Proportional to 138,601.50, 207,927.88 and 43,855.53

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Solution

The fourth proportional to 138,601.50, 207,927.88 and 43,855.53 is: 65,791.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,601.50 : 207,927.88 = 43,855.53 : x
  2. Step 2: Convert to fraction form
    138,601.50/207,927.88 = 43,855.53/x
  3. Step 3: Cross multiply
    138,601.50x = 207,927.88 × 43,855.53
  4. Step 4: Simplify right side
    138,601.50x = 9,118,786,489.81
  5. Step 5: Solve for x
    x = 9,118,786,489.81/138,601.50
  6. Step 6: Final answer
    x = 65,791.40

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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.