Home / 138,050.82-207,338.66-85,825.26

Finding the Fourth Proportional to 138,050.82, 207,338.66 and 85,825.26

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Solution

The fourth proportional to 138,050.82, 207,338.66 and 85,825.26 is: 128,901.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,050.82 : 207,338.66 = 85,825.26 : x
  2. Step 2: Convert to fraction form
    138,050.82/207,338.66 = 85,825.26/x
  3. Step 3: Cross multiply
    138,050.82x = 207,338.66 × 85,825.26
  4. Step 4: Simplify right side
    138,050.82x = 17,794,894,402.55
  5. Step 5: Solve for x
    x = 17,794,894,402.55/138,050.82
  6. Step 6: Final answer
    x = 128,901.04

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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.