Home / 132,972.80-199,459.20-80,441.60

Finding the Fourth Proportional to 132,972.80, 199,459.20 and 80,441.60

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Solution

The fourth proportional to 132,972.80, 199,459.20 and 80,441.60 is: 120,662.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,972.80 : 199,459.20 = 80,441.60 : x
  2. Step 2: Convert to fraction form
    132,972.80/199,459.20 = 80,441.60/x
  3. Step 3: Cross multiply
    132,972.80x = 199,459.20 × 80,441.60
  4. Step 4: Simplify right side
    132,972.80x = 16,044,817,182.72
  5. Step 5: Solve for x
    x = 16,044,817,182.72/132,972.80
  6. Step 6: Final answer
    x = 120,662.40

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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.