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Finding the Fourth Proportional to 185,331, 255,755.34 and 100,445.88

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Solution

The fourth proportional to 185,331, 255,755.34 and 100,445.88 is: 138,614.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,331 : 255,755.34 = 100,445.88 : x
  2. Step 2: Convert to fraction form
    185,331/255,755.34 = 100,445.88/x
  3. Step 3: Cross multiply
    185,331x = 255,755.34 × 100,445.88
  4. Step 4: Simplify right side
    185,331x = 25,689,570,191.00
  5. Step 5: Solve for x
    x = 25,689,570,191.00/185,331
  6. Step 6: Final answer
    x = 138,614.53

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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.