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Finding the Fourth Proportional to 127,314.43, 175,628.03 and 86,480.66

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Solution

The fourth proportional to 127,314.43, 175,628.03 and 86,480.66 is: 119,298.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,314.43 : 175,628.03 = 86,480.66 : x
  2. Step 2: Convert to fraction form
    127,314.43/175,628.03 = 86,480.66/x
  3. Step 3: Cross multiply
    127,314.43x = 175,628.03 × 86,480.66
  4. Step 4: Simplify right side
    127,314.43x = 15,188,428,806.86
  5. Step 5: Solve for x
    x = 15,188,428,806.86/127,314.43
  6. Step 6: Final answer
    x = 119,298.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.