Home / 138,733.56-207,927.76-72,134.56

Finding the Fourth Proportional to 138,733.56, 207,927.76 and 72,134.56

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Solution

The fourth proportional to 138,733.56, 207,927.76 and 72,134.56 is: 108,112.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,733.56 : 207,927.76 = 72,134.56 : x
  2. Step 2: Convert to fraction form
    138,733.56/207,927.76 = 72,134.56/x
  3. Step 3: Cross multiply
    138,733.56x = 207,927.76 × 72,134.56
  4. Step 4: Simplify right side
    138,733.56x = 14,998,777,479.39
  5. Step 5: Solve for x
    x = 14,998,777,479.39/138,733.56
  6. Step 6: Final answer
    x = 108,112.11

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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.