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Finding the Fourth Proportional to 173,855.80, 260,706.90 and 80,390.20

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Solution

The fourth proportional to 173,855.80, 260,706.90 and 80,390.20 is: 120,549.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,855.80 : 260,706.90 = 80,390.20 : x
  2. Step 2: Convert to fraction form
    173,855.80/260,706.90 = 80,390.20/x
  3. Step 3: Cross multiply
    173,855.80x = 260,706.90 × 80,390.20
  4. Step 4: Simplify right side
    173,855.80x = 20,958,279,832.38
  5. Step 5: Solve for x
    x = 20,958,279,832.38/173,855.80
  6. Step 6: Final answer
    x = 120,549.79

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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.