Home / 107,818.20-161,727.30-85,267.80

Finding the Fourth Proportional to 107,818.20, 161,727.30 and 85,267.80

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Solution

The fourth proportional to 107,818.20, 161,727.30 and 85,267.80 is: 127,901.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,818.20 : 161,727.30 = 85,267.80 : x
  2. Step 2: Convert to fraction form
    107,818.20/161,727.30 = 85,267.80/x
  3. Step 3: Cross multiply
    107,818.20x = 161,727.30 × 85,267.80
  4. Step 4: Simplify right side
    107,818.20x = 13,790,131,070.94
  5. Step 5: Solve for x
    x = 13,790,131,070.94/107,818.20
  6. Step 6: Final answer
    x = 127,901.70

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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.