Home / 138,423.26-207,639.38-43,654.36

Finding the Fourth Proportional to 138,423.26, 207,639.38 and 43,654.36

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Solution

The fourth proportional to 138,423.26, 207,639.38 and 43,654.36 is: 65,482.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,423.26 : 207,639.38 = 43,654.36 : x
  2. Step 2: Convert to fraction form
    138,423.26/207,639.38 = 43,654.36/x
  3. Step 3: Cross multiply
    138,423.26x = 207,639.38 × 43,654.36
  4. Step 4: Simplify right side
    138,423.26x = 9,064,363,377.30
  5. Step 5: Solve for x
    x = 9,064,363,377.30/138,423.26
  6. Step 6: Final answer
    x = 65,482.95

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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.