Home / 113,211-169,583.10-66,321.72

Finding the Fourth Proportional to 113,211, 169,583.10 and 66,321.72

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Solution

The fourth proportional to 113,211, 169,583.10 and 66,321.72 is: 99,345.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,211 : 169,583.10 = 66,321.72 : x
  2. Step 2: Convert to fraction form
    113,211/169,583.10 = 66,321.72/x
  3. Step 3: Cross multiply
    113,211x = 169,583.10 × 66,321.72
  4. Step 4: Simplify right side
    113,211x = 11,247,042,874.93
  5. Step 5: Solve for x
    x = 11,247,042,874.93/113,211
  6. Step 6: Final answer
    x = 99,345.85

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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.