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Finding the Fourth Proportional to 115,059.92, 172,631.44 and 40,191.12

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Solution

The fourth proportional to 115,059.92, 172,631.44 and 40,191.12 is: 60,301.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,059.92 : 172,631.44 = 40,191.12 : x
  2. Step 2: Convert to fraction form
    115,059.92/172,631.44 = 40,191.12/x
  3. Step 3: Cross multiply
    115,059.92x = 172,631.44 × 40,191.12
  4. Step 4: Simplify right side
    115,059.92x = 6,938,250,920.81
  5. Step 5: Solve for x
    x = 6,938,250,920.81/115,059.92
  6. Step 6: Final answer
    x = 60,301.20

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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.