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Finding the Fourth Proportional to 177,972.80, 266,959.20 and 84,660.80

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Solution

The fourth proportional to 177,972.80, 266,959.20 and 84,660.80 is: 126,991.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,972.80 : 266,959.20 = 84,660.80 : x
  2. Step 2: Convert to fraction form
    177,972.80/266,959.20 = 84,660.80/x
  3. Step 3: Cross multiply
    177,972.80x = 266,959.20 × 84,660.80
  4. Step 4: Simplify right side
    177,972.80x = 22,600,979,439.36
  5. Step 5: Solve for x
    x = 22,600,979,439.36/177,972.80
  6. Step 6: Final answer
    x = 126,991.20

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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.