Home / 127,340.91-175,731.50-79,621.92

Finding the Fourth Proportional to 127,340.91, 175,731.50 and 79,621.92

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Solution

The fourth proportional to 127,340.91, 175,731.50 and 79,621.92 is: 109,878.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,340.91 : 175,731.50 = 79,621.92 : x
  2. Step 2: Convert to fraction form
    127,340.91/175,731.50 = 79,621.92/x
  3. Step 3: Cross multiply
    127,340.91x = 175,731.50 × 79,621.92
  4. Step 4: Simplify right side
    127,340.91x = 13,992,079,434.48
  5. Step 5: Solve for x
    x = 13,992,079,434.48/127,340.91
  6. Step 6: Final answer
    x = 109,878.90

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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.