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Finding the Fourth Proportional to 185,542.72, 256,049.72 and 100,660.40

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Solution

The fourth proportional to 185,542.72, 256,049.72 and 100,660.40 is: 138,911.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,542.72 : 256,049.72 = 100,660.40 : x
  2. Step 2: Convert to fraction form
    185,542.72/256,049.72 = 100,660.40/x
  3. Step 3: Cross multiply
    185,542.72x = 256,049.72 × 100,660.40
  4. Step 4: Simplify right side
    185,542.72x = 25,774,067,235.09
  5. Step 5: Solve for x
    x = 25,774,067,235.09/185,542.72
  6. Step 6: Final answer
    x = 138,911.77

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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.