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Finding the Fourth Proportional to 168,256.20, 252,378.84 and 68,389.58

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Solution

The fourth proportional to 168,256.20, 252,378.84 and 68,389.58 is: 102,582.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,256.20 : 252,378.84 = 68,389.58 : x
  2. Step 2: Convert to fraction form
    168,256.20/252,378.84 = 68,389.58/x
  3. Step 3: Cross multiply
    168,256.20x = 252,378.84 × 68,389.58
  4. Step 4: Simplify right side
    168,256.20x = 17,260,082,868.49
  5. Step 5: Solve for x
    x = 17,260,082,868.49/168,256.20
  6. Step 6: Final answer
    x = 102,582.15

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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.