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Finding the Fourth Proportional to 117,952.70, 176,754.09 and 86,634.86

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Solution

The fourth proportional to 117,952.70, 176,754.09 and 86,634.86 is: 129,823.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,952.70 : 176,754.09 = 86,634.86 : x
  2. Step 2: Convert to fraction form
    117,952.70/176,754.09 = 86,634.86/x
  3. Step 3: Cross multiply
    117,952.70x = 176,754.09 × 86,634.86
  4. Step 4: Simplify right side
    117,952.70x = 15,313,064,966.52
  5. Step 5: Solve for x
    x = 15,313,064,966.52/117,952.70
  6. Step 6: Final answer
    x = 129,823.78

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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.