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Finding the Fourth Proportional to 108,950.92, 150,221.46 and 78,687.88

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Solution

The fourth proportional to 108,950.92, 150,221.46 and 78,687.88 is: 108,494.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,950.92 : 150,221.46 = 78,687.88 : x
  2. Step 2: Convert to fraction form
    108,950.92/150,221.46 = 78,687.88/x
  3. Step 3: Cross multiply
    108,950.92x = 150,221.46 × 78,687.88
  4. Step 4: Simplify right side
    108,950.92x = 11,820,608,217.90
  5. Step 5: Solve for x
    x = 11,820,608,217.90/108,950.92
  6. Step 6: Final answer
    x = 108,494.80

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1.5x scale

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.