Home / 185,600.72-256,129.66-100,717.76

Finding the Fourth Proportional to 185,600.72, 256,129.66 and 100,717.76

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Solution

The fourth proportional to 185,600.72, 256,129.66 and 100,717.76 is: 138,990.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,600.72 : 256,129.66 = 100,717.76 : x
  2. Step 2: Convert to fraction form
    185,600.72/256,129.66 = 100,717.76/x
  3. Step 3: Cross multiply
    185,600.72x = 256,129.66 × 100,717.76
  4. Step 4: Simplify right side
    185,600.72x = 25,796,805,624.76
  5. Step 5: Solve for x
    x = 25,796,805,624.76/185,600.72
  6. Step 6: Final answer
    x = 138,990.87

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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.