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Finding the Fourth Proportional to 163,170.72, 225,154.08 and 91,550.52

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Solution

The fourth proportional to 163,170.72, 225,154.08 and 91,550.52 is: 126,327.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,170.72 : 225,154.08 = 91,550.52 : x
  2. Step 2: Convert to fraction form
    163,170.72/225,154.08 = 91,550.52/x
  3. Step 3: Cross multiply
    163,170.72x = 225,154.08 × 91,550.52
  4. Step 4: Simplify right side
    163,170.72x = 20,612,973,104.12
  5. Step 5: Solve for x
    x = 20,612,973,104.12/163,170.72
  6. Step 6: Final answer
    x = 126,327.65

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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.