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Finding the Fourth Proportional to 168,510.80, 252,658.20 and 79,648.40

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Solution

The fourth proportional to 168,510.80, 252,658.20 and 79,648.40 is: 119,421.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,510.80 : 252,658.20 = 79,648.40 : x
  2. Step 2: Convert to fraction form
    168,510.80/252,658.20 = 79,648.40/x
  3. Step 3: Cross multiply
    168,510.80x = 252,658.20 × 79,648.40
  4. Step 4: Simplify right side
    168,510.80x = 20,123,821,376.88
  5. Step 5: Solve for x
    x = 20,123,821,376.88/168,510.80
  6. Step 6: Final answer
    x = 119,421.55

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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.