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Finding the Fourth Proportional to 127,249.60, 190,711.20 and 71,089.60

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Solution

The fourth proportional to 127,249.60, 190,711.20 and 71,089.60 is: 106,543.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,249.60 : 190,711.20 = 71,089.60 : x
  2. Step 2: Convert to fraction form
    127,249.60/190,711.20 = 71,089.60/x
  3. Step 3: Cross multiply
    127,249.60x = 190,711.20 × 71,089.60
  4. Step 4: Simplify right side
    127,249.60x = 13,557,582,923.52
  5. Step 5: Solve for x
    x = 13,557,582,923.52/127,249.60
  6. Step 6: Final answer
    x = 106,543.23

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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.