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Finding the Fourth Proportional to 104,554.40, 156,568.80 and 81,197.12

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Solution

The fourth proportional to 104,554.40, 156,568.80 and 81,197.12 is: 121,591.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,554.40 : 156,568.80 = 81,197.12 : x
  2. Step 2: Convert to fraction form
    104,554.40/156,568.80 = 81,197.12/x
  3. Step 3: Cross multiply
    104,554.40x = 156,568.80 × 81,197.12
  4. Step 4: Simplify right side
    104,554.40x = 12,712,935,641.86
  5. Step 5: Solve for x
    x = 12,712,935,641.86/104,554.40
  6. Step 6: Final answer
    x = 121,591.59

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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.