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Finding the Fourth Proportional to 171,879.40, 257,819.10 and 98,151.40

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Solution

The fourth proportional to 171,879.40, 257,819.10 and 98,151.40 is: 147,227.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,879.40 : 257,819.10 = 98,151.40 : x
  2. Step 2: Convert to fraction form
    171,879.40/257,819.10 = 98,151.40/x
  3. Step 3: Cross multiply
    171,879.40x = 257,819.10 × 98,151.40
  4. Step 4: Simplify right side
    171,879.40x = 25,305,305,611.74
  5. Step 5: Solve for x
    x = 25,305,305,611.74/171,879.40
  6. Step 6: Final answer
    x = 147,227.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.