Home / 99,236.85-137,003.60-65,343.81

Finding the Fourth Proportional to 99,236.85, 137,003.60 and 65,343.81

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Solution

The fourth proportional to 99,236.85, 137,003.60 and 65,343.81 is: 90,211.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,236.85 : 137,003.60 = 65,343.81 : x
  2. Step 2: Convert to fraction form
    99,236.85/137,003.60 = 65,343.81/x
  3. Step 3: Cross multiply
    99,236.85x = 137,003.60 × 65,343.81
  4. Step 4: Simplify right side
    99,236.85x = 8,952,337,884.84
  5. Step 5: Solve for x
    x = 8,952,337,884.84/99,236.85
  6. Step 6: Final answer
    x = 90,211.83

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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.