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Finding the Fourth Proportional to 132,688.80, 199,033.20 and 80,200.80

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Solution

The fourth proportional to 132,688.80, 199,033.20 and 80,200.80 is: 120,301.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,688.80 : 199,033.20 = 80,200.80 : x
  2. Step 2: Convert to fraction form
    132,688.80/199,033.20 = 80,200.80/x
  3. Step 3: Cross multiply
    132,688.80x = 199,033.20 × 80,200.80
  4. Step 4: Simplify right side
    132,688.80x = 15,962,621,866.56
  5. Step 5: Solve for x
    x = 15,962,621,866.56/132,688.80
  6. Step 6: Final answer
    x = 120,301.20

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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.