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Finding the Fourth Proportional to 113,725.67, 170,736.32 and 87,448.86

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Solution

The fourth proportional to 113,725.67, 170,736.32 and 87,448.86 is: 131,286.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,725.67 : 170,736.32 = 87,448.86 : x
  2. Step 2: Convert to fraction form
    113,725.67/170,736.32 = 87,448.86/x
  3. Step 3: Cross multiply
    113,725.67x = 170,736.32 × 87,448.86
  4. Step 4: Simplify right side
    113,725.67x = 14,930,696,763.22
  5. Step 5: Solve for x
    x = 14,930,696,763.22/113,725.67
  6. Step 6: Final answer
    x = 131,286.96

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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.