Home / 138,557.88-207,536.07-85,087.59

Finding the Fourth Proportional to 138,557.88, 207,536.07 and 85,087.59

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Solution

The fourth proportional to 138,557.88, 207,536.07 and 85,087.59 is: 127,446.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,557.88 : 207,536.07 = 85,087.59 : x
  2. Step 2: Convert to fraction form
    138,557.88/207,536.07 = 85,087.59/x
  3. Step 3: Cross multiply
    138,557.88x = 207,536.07 × 85,087.59
  4. Step 4: Simplify right side
    138,557.88x = 17,658,744,034.37
  5. Step 5: Solve for x
    x = 17,658,744,034.37/138,557.88
  6. Step 6: Final answer
    x = 127,446.70

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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.