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Finding the Fourth Proportional to 80,106.80, 120,160.20 and 80,106.80

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Solution

The fourth proportional to 80,106.80, 120,160.20 and 80,106.80 is: 120,160.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,106.80 : 120,160.20 = 80,106.80 : x
  2. Step 2: Convert to fraction form
    80,106.80/120,160.20 = 80,106.80/x
  3. Step 3: Cross multiply
    80,106.80x = 120,160.20 × 80,106.80
  4. Step 4: Simplify right side
    80,106.80x = 9,625,649,109.36
  5. Step 5: Solve for x
    x = 9,625,649,109.36/80,106.80
  6. Step 6: Final answer
    x = 120,160.20

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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.