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Finding the Fourth Proportional to 181,861.76, 250,974.60 and 100,192.88

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Solution

The fourth proportional to 181,861.76, 250,974.60 and 100,192.88 is: 138,269.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,861.76 : 250,974.60 = 100,192.88 : x
  2. Step 2: Convert to fraction form
    181,861.76/250,974.60 = 100,192.88/x
  3. Step 3: Cross multiply
    181,861.76x = 250,974.60 × 100,192.88
  4. Step 4: Simplify right side
    181,861.76x = 25,145,867,980.85
  5. Step 5: Solve for x
    x = 25,145,867,980.85/181,861.76
  6. Step 6: Final answer
    x = 138,269.13

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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.