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Finding the Fourth Proportional to 88,165.31, 131,955.48 and 80,285.96

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Solution

The fourth proportional to 88,165.31, 131,955.48 and 80,285.96 is: 120,162.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,165.31 : 131,955.48 = 80,285.96 : x
  2. Step 2: Convert to fraction form
    88,165.31/131,955.48 = 80,285.96/x
  3. Step 3: Cross multiply
    88,165.31x = 131,955.48 × 80,285.96
  4. Step 4: Simplify right side
    88,165.31x = 10,594,172,718.95
  5. Step 5: Solve for x
    x = 10,594,172,718.95/88,165.31
  6. Step 6: Final answer
    x = 120,162.60

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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.