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Finding the Fourth Proportional to 138,250.40, 207,375.60 and 49,506.80

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Solution

The fourth proportional to 138,250.40, 207,375.60 and 49,506.80 is: 74,260.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,250.40 : 207,375.60 = 49,506.80 : x
  2. Step 2: Convert to fraction form
    138,250.40/207,375.60 = 49,506.80/x
  3. Step 3: Cross multiply
    138,250.40x = 207,375.60 × 49,506.80
  4. Step 4: Simplify right side
    138,250.40x = 10,266,502,354.08
  5. Step 5: Solve for x
    x = 10,266,502,354.08/138,250.40
  6. Step 6: Final answer
    x = 74,260.20

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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.