Home / 168,820.20-252,890.10-105,445.80

Finding the Fourth Proportional to 168,820.20, 252,890.10 and 105,445.80

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Solution

The fourth proportional to 168,820.20, 252,890.10 and 105,445.80 is: 157,956.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,820.20 : 252,890.10 = 105,445.80 : x
  2. Step 2: Convert to fraction form
    168,820.20/252,890.10 = 105,445.80/x
  3. Step 3: Cross multiply
    168,820.20x = 252,890.10 × 105,445.80
  4. Step 4: Simplify right side
    168,820.20x = 26,666,198,906.58
  5. Step 5: Solve for x
    x = 26,666,198,906.58/168,820.20
  6. Step 6: Final answer
    x = 157,956.21

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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.