Home / 185,015.57-255,321.05-100,132.70

Finding the Fourth Proportional to 185,015.57, 255,321.05 and 100,132.70

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Solution

The fourth proportional to 185,015.57, 255,321.05 and 100,132.70 is: 138,182.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,015.57 : 255,321.05 = 100,132.70 : x
  2. Step 2: Convert to fraction form
    185,015.57/255,321.05 = 100,132.70/x
  3. Step 3: Cross multiply
    185,015.57x = 255,321.05 × 100,132.70
  4. Step 4: Simplify right side
    185,015.57x = 25,565,984,326.07
  5. Step 5: Solve for x
    x = 25,565,984,326.07/185,015.57
  6. Step 6: Final answer
    x = 138,182.88

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1.5x scale

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.