Home / 84,938.14-127,390.20-80,722.90

Finding the Fourth Proportional to 84,938.14, 127,390.20 and 80,722.90

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Solution

The fourth proportional to 84,938.14, 127,390.20 and 80,722.90 is: 121,068.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,938.14 : 127,390.20 = 80,722.90 : x
  2. Step 2: Convert to fraction form
    84,938.14/127,390.20 = 80,722.90/x
  3. Step 3: Cross multiply
    84,938.14x = 127,390.20 × 80,722.90
  4. Step 4: Simplify right side
    84,938.14x = 10,283,306,375.58
  5. Step 5: Solve for x
    x = 10,283,306,375.58/84,938.14
  6. Step 6: Final answer
    x = 121,068.18

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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.