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Finding the Fourth Proportional to 172,147.20, 258,220.98 and 53,819.16

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Solution

The fourth proportional to 172,147.20, 258,220.98 and 53,819.16 is: 80,728.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,147.20 : 258,220.98 = 53,819.16 : x
  2. Step 2: Convert to fraction form
    172,147.20/258,220.98 = 53,819.16/x
  3. Step 3: Cross multiply
    172,147.20x = 258,220.98 × 53,819.16
  4. Step 4: Simplify right side
    172,147.20x = 13,897,236,237.98
  5. Step 5: Solve for x
    x = 13,897,236,237.98/172,147.20
  6. Step 6: Final answer
    x = 80,728.80

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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.