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Finding the Fourth Proportional to 173,217.20, 259,825.80 and 79,905.20

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Solution

The fourth proportional to 173,217.20, 259,825.80 and 79,905.20 is: 119,857.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,217.20 : 259,825.80 = 79,905.20 : x
  2. Step 2: Convert to fraction form
    173,217.20/259,825.80 = 79,905.20/x
  3. Step 3: Cross multiply
    173,217.20x = 259,825.80 × 79,905.20
  4. Step 4: Simplify right side
    173,217.20x = 20,761,432,514.16
  5. Step 5: Solve for x
    x = 20,761,432,514.16/173,217.20
  6. Step 6: Final answer
    x = 119,857.80

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1.5x scale

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.