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Finding the Fourth Proportional to 113,725.92, 170,736.70 and 87,449.11

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Solution

The fourth proportional to 113,725.92, 170,736.70 and 87,449.11 is: 131,287.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,725.92 : 170,736.70 = 87,449.11 : x
  2. Step 2: Convert to fraction form
    113,725.92/170,736.70 = 87,449.11/x
  3. Step 3: Cross multiply
    113,725.92x = 170,736.70 × 87,449.11
  4. Step 4: Simplify right side
    113,725.92x = 14,930,772,240.71
  5. Step 5: Solve for x
    x = 14,930,772,240.71/113,725.92
  6. Step 6: Final answer
    x = 131,287.33

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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.