Home / 80,127.92-120,141-42,664.88

Finding the Fourth Proportional to 80,127.92, 120,141 and 42,664.88

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Solution

The fourth proportional to 80,127.92, 120,141 and 42,664.88 is: 63,970.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,127.92 : 120,141 = 42,664.88 : x
  2. Step 2: Convert to fraction form
    80,127.92/120,141 = 42,664.88/x
  3. Step 3: Cross multiply
    80,127.92x = 120,141 × 42,664.88
  4. Step 4: Simplify right side
    80,127.92x = 5,125,801,348.08
  5. Step 5: Solve for x
    x = 5,125,801,348.08/80,127.92
  6. Step 6: Final answer
    x = 63,970.23

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1.5x scale

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.