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Finding the Fourth Proportional to 170,281.98, 255,191.15 and 80,310.68

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Solution

The fourth proportional to 170,281.98, 255,191.15 and 80,310.68 is: 120,356.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,281.98 : 255,191.15 = 80,310.68 : x
  2. Step 2: Convert to fraction form
    170,281.98/255,191.15 = 80,310.68/x
  3. Step 3: Cross multiply
    170,281.98x = 255,191.15 × 80,310.68
  4. Step 4: Simplify right side
    170,281.98x = 20,494,574,082.84
  5. Step 5: Solve for x
    x = 20,494,574,082.84/170,281.98
  6. Step 6: Final answer
    x = 120,356.68

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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.