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Finding the Fourth Proportional to 127,517.80, 191,276.70 and 120,260.20

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Solution

The fourth proportional to 127,517.80, 191,276.70 and 120,260.20 is: 180,390.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,517.80 : 191,276.70 = 120,260.20 : x
  2. Step 2: Convert to fraction form
    127,517.80/191,276.70 = 120,260.20/x
  3. Step 3: Cross multiply
    127,517.80x = 191,276.70 × 120,260.20
  4. Step 4: Simplify right side
    127,517.80x = 23,002,974,197.34
  5. Step 5: Solve for x
    x = 23,002,974,197.34/127,517.80
  6. Step 6: Final answer
    x = 180,390.30

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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.