Home / 115,161.28-172,792.20-40,335.16

Finding the Fourth Proportional to 115,161.28, 172,792.20 and 40,335.16

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Solution

The fourth proportional to 115,161.28, 172,792.20 and 40,335.16 is: 60,520.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,161.28 : 172,792.20 = 40,335.16 : x
  2. Step 2: Convert to fraction form
    115,161.28/172,792.20 = 40,335.16/x
  3. Step 3: Cross multiply
    115,161.28x = 172,792.20 × 40,335.16
  4. Step 4: Simplify right side
    115,161.28x = 6,969,601,033.75
  5. Step 5: Solve for x
    x = 6,969,601,033.75/115,161.28
  6. Step 6: Final answer
    x = 60,520.35

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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.