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Finding the Fourth Proportional to 115,191.92, 172,882.92 and 89,055.92

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Solution

The fourth proportional to 115,191.92, 172,882.92 and 89,055.92 is: 133,657.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,191.92 : 172,882.92 = 89,055.92 : x
  2. Step 2: Convert to fraction form
    115,191.92/172,882.92 = 89,055.92/x
  3. Step 3: Cross multiply
    115,191.92x = 172,882.92 × 89,055.92
  4. Step 4: Simplify right side
    115,191.92x = 15,396,247,492.89
  5. Step 5: Solve for x
    x = 15,396,247,492.89/115,191.92
  6. Step 6: Final answer
    x = 133,657.36

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1.5x scale

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.