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Finding the Fourth Proportional to 116,751.96, 161,138.70 and 91,557.72

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Solution

The fourth proportional to 116,751.96, 161,138.70 and 91,557.72 is: 126,366.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,751.96 : 161,138.70 = 91,557.72 : x
  2. Step 2: Convert to fraction form
    116,751.96/161,138.70 = 91,557.72/x
  3. Step 3: Cross multiply
    116,751.96x = 161,138.70 × 91,557.72
  4. Step 4: Simplify right side
    116,751.96x = 14,753,491,975.76
  5. Step 5: Solve for x
    x = 14,753,491,975.76/116,751.96
  6. Step 6: Final answer
    x = 126,366.12

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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.