Home / 137,725.68-206,422.28-71,129.52

Finding the Fourth Proportional to 137,725.68, 206,422.28 and 71,129.52

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Solution

The fourth proportional to 137,725.68, 206,422.28 and 71,129.52 is: 106,608.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,725.68 : 206,422.28 = 71,129.52 : x
  2. Step 2: Convert to fraction form
    137,725.68/206,422.28 = 71,129.52/x
  3. Step 3: Cross multiply
    137,725.68x = 206,422.28 × 71,129.52
  4. Step 4: Simplify right side
    137,725.68x = 14,682,717,693.71
  5. Step 5: Solve for x
    x = 14,682,717,693.71/137,725.68
  6. Step 6: Final answer
    x = 106,608.42

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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.