Home / 119,071.11-178,512.96-81,517.39

Finding the Fourth Proportional to 119,071.11, 178,512.96 and 81,517.39

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Solution

The fourth proportional to 119,071.11, 178,512.96 and 81,517.39 is: 122,211.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,071.11 : 178,512.96 = 81,517.39 : x
  2. Step 2: Convert to fraction form
    119,071.11/178,512.96 = 81,517.39/x
  3. Step 3: Cross multiply
    119,071.11x = 178,512.96 × 81,517.39
  4. Step 4: Simplify right side
    119,071.11x = 14,551,910,439.78
  5. Step 5: Solve for x
    x = 14,551,910,439.78/119,071.11
  6. Step 6: Final answer
    x = 122,211.93

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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.