Home / 149,839.30-206,902.65-99,765.70

Finding the Fourth Proportional to 149,839.30, 206,902.65 and 99,765.70

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Solution

The fourth proportional to 149,839.30, 206,902.65 and 99,765.70 is: 137,759.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,839.30 : 206,902.65 = 99,765.70 : x
  2. Step 2: Convert to fraction form
    149,839.30/206,902.65 = 99,765.70/x
  3. Step 3: Cross multiply
    149,839.30x = 206,902.65 × 99,765.70
  4. Step 4: Simplify right side
    149,839.30x = 20,641,787,709.11
  5. Step 5: Solve for x
    x = 20,641,787,709.11/149,839.30
  6. Step 6: Final answer
    x = 137,759.50

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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.