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Finding the Fourth Proportional to 108,479.80, 149,697.72 and 63,159.08

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Solution

The fourth proportional to 108,479.80, 149,697.72 and 63,159.08 is: 87,156.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,479.80 : 149,697.72 = 63,159.08 : x
  2. Step 2: Convert to fraction form
    108,479.80/149,697.72 = 63,159.08/x
  3. Step 3: Cross multiply
    108,479.80x = 149,697.72 × 63,159.08
  4. Step 4: Simplify right side
    108,479.80x = 9,454,770,273.30
  5. Step 5: Solve for x
    x = 9,454,770,273.30/108,479.80
  6. Step 6: Final answer
    x = 87,156.97

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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.