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Finding the Fourth Proportional to 158,580.96, 218,839.92 and 91,511.52

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Solution

The fourth proportional to 158,580.96, 218,839.92 and 91,511.52 is: 126,284.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,580.96 : 218,839.92 = 91,511.52 : x
  2. Step 2: Convert to fraction form
    158,580.96/218,839.92 = 91,511.52/x
  3. Step 3: Cross multiply
    158,580.96x = 218,839.92 × 91,511.52
  4. Step 4: Simplify right side
    158,580.96x = 20,026,373,715.88
  5. Step 5: Solve for x
    x = 20,026,373,715.88/158,580.96
  6. Step 6: Final answer
    x = 126,284.86

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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.