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Finding the Fourth Proportional to 177,973.28, 266,959.92 and 81,900.80

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Solution

The fourth proportional to 177,973.28, 266,959.92 and 81,900.80 is: 122,851.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,973.28 : 266,959.92 = 81,900.80 : x
  2. Step 2: Convert to fraction form
    177,973.28/266,959.92 = 81,900.80/x
  3. Step 3: Cross multiply
    177,973.28x = 266,959.92 × 81,900.80
  4. Step 4: Simplify right side
    177,973.28x = 21,864,231,015.94
  5. Step 5: Solve for x
    x = 21,864,231,015.94/177,973.28
  6. Step 6: Final answer
    x = 122,851.20

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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.