Home / 99,769.20-149,826.60-53,113.20

Finding the Fourth Proportional to 99,769.20, 149,826.60 and 53,113.20

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Solution

The fourth proportional to 99,769.20, 149,826.60 and 53,113.20 is: 79,761.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,769.20 : 149,826.60 = 53,113.20 : x
  2. Step 2: Convert to fraction form
    99,769.20/149,826.60 = 53,113.20/x
  3. Step 3: Cross multiply
    99,769.20x = 149,826.60 × 53,113.20
  4. Step 4: Simplify right side
    99,769.20x = 7,957,770,171.12
  5. Step 5: Solve for x
    x = 7,957,770,171.12/99,769.20
  6. Step 6: Final answer
    x = 79,761.79

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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.