Home / 138,048.10-207,072.15-88,281.70

Finding the Fourth Proportional to 138,048.10, 207,072.15 and 88,281.70

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Solution

The fourth proportional to 138,048.10, 207,072.15 and 88,281.70 is: 132,422.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,048.10 : 207,072.15 = 88,281.70 : x
  2. Step 2: Convert to fraction form
    138,048.10/207,072.15 = 88,281.70/x
  3. Step 3: Cross multiply
    138,048.10x = 207,072.15 × 88,281.70
  4. Step 4: Simplify right side
    138,048.10x = 18,280,681,424.66
  5. Step 5: Solve for x
    x = 18,280,681,424.66/138,048.10
  6. Step 6: Final answer
    x = 132,422.55

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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.