Home / 127,452.80-191,179.20-80,758.40

Finding the Fourth Proportional to 127,452.80, 191,179.20 and 80,758.40

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Solution

The fourth proportional to 127,452.80, 191,179.20 and 80,758.40 is: 121,137.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,452.80 : 191,179.20 = 80,758.40 : x
  2. Step 2: Convert to fraction form
    127,452.80/191,179.20 = 80,758.40/x
  3. Step 3: Cross multiply
    127,452.80x = 191,179.20 × 80,758.40
  4. Step 4: Simplify right side
    127,452.80x = 15,439,326,305.28
  5. Step 5: Solve for x
    x = 15,439,326,305.28/127,452.80
  6. Step 6: Final answer
    x = 121,137.60

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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.