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Finding the Fourth Proportional to 132,960.80, 199,441.20 and 66,411.20

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Solution

The fourth proportional to 132,960.80, 199,441.20 and 66,411.20 is: 99,616.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,960.80 : 199,441.20 = 66,411.20 : x
  2. Step 2: Convert to fraction form
    132,960.80/199,441.20 = 66,411.20/x
  3. Step 3: Cross multiply
    132,960.80x = 199,441.20 × 66,411.20
  4. Step 4: Simplify right side
    132,960.80x = 13,245,129,421.44
  5. Step 5: Solve for x
    x = 13,245,129,421.44/132,960.80
  6. Step 6: Final answer
    x = 99,616.80

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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.