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Finding the Fourth Proportional to 168,320.80, 252,520.16 and 49,989.60

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Solution

The fourth proportional to 168,320.80, 252,520.16 and 49,989.60 is: 74,995.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,320.80 : 252,520.16 = 49,989.60 : x
  2. Step 2: Convert to fraction form
    168,320.80/252,520.16 = 49,989.60/x
  3. Step 3: Cross multiply
    168,320.80x = 252,520.16 × 49,989.60
  4. Step 4: Simplify right side
    168,320.80x = 12,623,381,790.34
  5. Step 5: Solve for x
    x = 12,623,381,790.34/168,320.80
  6. Step 6: Final answer
    x = 74,995.97

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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.