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Finding the Fourth Proportional to 127,544.80, 191,317.20 and 80,850.40

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Solution

The fourth proportional to 127,544.80, 191,317.20 and 80,850.40 is: 121,275.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,544.80 : 191,317.20 = 80,850.40 : x
  2. Step 2: Convert to fraction form
    127,544.80/191,317.20 = 80,850.40/x
  3. Step 3: Cross multiply
    127,544.80x = 191,317.20 × 80,850.40
  4. Step 4: Simplify right side
    127,544.80x = 15,468,072,146.88
  5. Step 5: Solve for x
    x = 15,468,072,146.88/127,544.80
  6. Step 6: Final answer
    x = 121,275.60

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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.