Home / 120,829.33-181,274.78-85,359.97

Finding the Fourth Proportional to 120,829.33, 181,274.78 and 85,359.97

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Solution

The fourth proportional to 120,829.33, 181,274.78 and 85,359.97 is: 128,061.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,829.33 : 181,274.78 = 85,359.97 : x
  2. Step 2: Convert to fraction form
    120,829.33/181,274.78 = 85,359.97/x
  3. Step 3: Cross multiply
    120,829.33x = 181,274.78 × 85,359.97
  4. Step 4: Simplify right side
    120,829.33x = 15,473,608,902.57
  5. Step 5: Solve for x
    x = 15,473,608,902.57/120,829.33
  6. Step 6: Final answer
    x = 128,061.70

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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.