Home / 131,616.20-181,629.78-71,186.92

Finding the Fourth Proportional to 131,616.20, 181,629.78 and 71,186.92

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Solution

The fourth proportional to 131,616.20, 181,629.78 and 71,186.92 is: 98,237.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,616.20 : 181,629.78 = 71,186.92 : x
  2. Step 2: Convert to fraction form
    131,616.20/181,629.78 = 71,186.92/x
  3. Step 3: Cross multiply
    131,616.20x = 181,629.78 × 71,186.92
  4. Step 4: Simplify right side
    131,616.20x = 12,929,664,618.48
  5. Step 5: Solve for x
    x = 12,929,664,618.48/131,616.20
  6. Step 6: Final answer
    x = 98,237.64

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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.