Home / 185,015.12-255,321.61-100,132.16

Finding the Fourth Proportional to 185,015.12, 255,321.61 and 100,132.16

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Solution

The fourth proportional to 185,015.12, 255,321.61 and 100,132.16 is: 138,182.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,015.12 : 255,321.61 = 100,132.16 : x
  2. Step 2: Convert to fraction form
    185,015.12/255,321.61 = 100,132.16/x
  3. Step 3: Cross multiply
    185,015.12x = 255,321.61 × 100,132.16
  4. Step 4: Simplify right side
    185,015.12x = 25,565,902,777.04
  5. Step 5: Solve for x
    x = 25,565,902,777.04/185,015.12
  6. Step 6: Final answer
    x = 138,182.78

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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.