Home / 128,273.28-176,902.50-80,531.08

Finding the Fourth Proportional to 128,273.28, 176,902.50 and 80,531.08

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Solution

The fourth proportional to 128,273.28, 176,902.50 and 80,531.08 is: 111,060.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,273.28 : 176,902.50 = 80,531.08 : x
  2. Step 2: Convert to fraction form
    128,273.28/176,902.50 = 80,531.08/x
  3. Step 3: Cross multiply
    128,273.28x = 176,902.50 × 80,531.08
  4. Step 4: Simplify right side
    128,273.28x = 14,246,149,379.70
  5. Step 5: Solve for x
    x = 14,246,149,379.70/128,273.28
  6. Step 6: Final answer
    x = 111,060.93

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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.