Home / 121,913.25-182,869.89-80,057.70

Finding the Fourth Proportional to 121,913.25, 182,869.89 and 80,057.70

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Solution

The fourth proportional to 121,913.25, 182,869.89 and 80,057.70 is: 120,086.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,913.25 : 182,869.89 = 80,057.70 : x
  2. Step 2: Convert to fraction form
    121,913.25/182,869.89 = 80,057.70/x
  3. Step 3: Cross multiply
    121,913.25x = 182,869.89 × 80,057.70
  4. Step 4: Simplify right side
    121,913.25x = 14,640,142,792.65
  5. Step 5: Solve for x
    x = 14,640,142,792.65/121,913.25
  6. Step 6: Final answer
    x = 120,086.56

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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.