Home / 138,891.26-208,342.02-71,405.22

Finding the Fourth Proportional to 138,891.26, 208,342.02 and 71,405.22

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Solution

The fourth proportional to 138,891.26, 208,342.02 and 71,405.22 is: 107,110.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,891.26 : 208,342.02 = 71,405.22 : x
  2. Step 2: Convert to fraction form
    138,891.26/208,342.02 = 71,405.22/x
  3. Step 3: Cross multiply
    138,891.26x = 208,342.02 × 71,405.22
  4. Step 4: Simplify right side
    138,891.26x = 14,876,707,773.34
  5. Step 5: Solve for x
    x = 14,876,707,773.34/138,891.26
  6. Step 6: Final answer
    x = 107,110.47

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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.