Home / 87,199.74-120,338.28-61,751.70

Finding the Fourth Proportional to 87,199.74, 120,338.28 and 61,751.70

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Solution

The fourth proportional to 87,199.74, 120,338.28 and 61,751.70 is: 85,219.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,199.74 : 120,338.28 = 61,751.70 : x
  2. Step 2: Convert to fraction form
    87,199.74/120,338.28 = 61,751.70/x
  3. Step 3: Cross multiply
    87,199.74x = 120,338.28 × 61,751.70
  4. Step 4: Simplify right side
    87,199.74x = 7,431,093,365.08
  5. Step 5: Solve for x
    x = 7,431,093,365.08/87,199.74
  6. Step 6: Final answer
    x = 85,219.21

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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.