Home / 131,687.28-181,811.52-91,388.16

Finding the Fourth Proportional to 131,687.28, 181,811.52 and 91,388.16

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Solution

The fourth proportional to 131,687.28, 181,811.52 and 91,388.16 is: 126,173.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,687.28 : 181,811.52 = 91,388.16 : x
  2. Step 2: Convert to fraction form
    131,687.28/181,811.52 = 91,388.16/x
  3. Step 3: Cross multiply
    131,687.28x = 181,811.52 × 91,388.16
  4. Step 4: Simplify right side
    131,687.28x = 16,615,420,279.60
  5. Step 5: Solve for x
    x = 16,615,420,279.60/131,687.28
  6. Step 6: Final answer
    x = 126,173.31

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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.