Home / 138,256.47-207,514.71-71,743.73

Finding the Fourth Proportional to 138,256.47, 207,514.71 and 71,743.73

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Solution

The fourth proportional to 138,256.47, 207,514.71 and 71,743.73 is: 107,683.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,256.47 : 207,514.71 = 71,743.73 : x
  2. Step 2: Convert to fraction form
    138,256.47/207,514.71 = 71,743.73/x
  3. Step 3: Cross multiply
    138,256.47x = 207,514.71 × 71,743.73
  4. Step 4: Simplify right side
    138,256.47x = 14,887,878,287.69
  5. Step 5: Solve for x
    x = 14,887,878,287.69/138,256.47
  6. Step 6: Final answer
    x = 107,683.05

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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.