Home / 138,649.27-207,988.49-45,162.31

Finding the Fourth Proportional to 138,649.27, 207,988.49 and 45,162.31

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Solution

The fourth proportional to 138,649.27, 207,988.49 and 45,162.31 is: 67,748.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,649.27 : 207,988.49 = 45,162.31 : x
  2. Step 2: Convert to fraction form
    138,649.27/207,988.49 = 45,162.31/x
  3. Step 3: Cross multiply
    138,649.27x = 207,988.49 × 45,162.31
  4. Step 4: Simplify right side
    138,649.27x = 9,393,240,436.00
  5. Step 5: Solve for x
    x = 9,393,240,436.00/138,649.27
  6. Step 6: Final answer
    x = 67,748.21

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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.