Home / 168,381,608.10-252,784,988.55-90,720,363.30

Finding the Fourth Proportional to 168,381,608.10, 252,784,988.55 and 90,720,363.30

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Solution

The fourth proportional to 168,381,608.10, 252,784,988.55 and 90,720,363.30 is: 136,195,076.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,381,608.10 : 252,784,988.55 = 90,720,363.30 : x
  2. Step 2: Convert to fraction form
    168,381,608.10/252,784,988.55 = 90,720,363.30/x
  3. Step 3: Cross multiply
    168,381,608.10x = 252,784,988.55 × 90,720,363.30
  4. Step 4: Simplify right side
    168,381,608.10x = 22,932,745,998,042,340
  5. Step 5: Solve for x
    x = 22,932,745,998,042,340/168,381,608.10
  6. Step 6: Final answer
    x = 136,195,076.51

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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.