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Finding the Fourth Proportional to 127,350.80, 191,112.60 and 82,869.20

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Solution

The fourth proportional to 127,350.80, 191,112.60 and 82,869.20 is: 124,360.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,350.80 : 191,112.60 = 82,869.20 : x
  2. Step 2: Convert to fraction form
    127,350.80/191,112.60 = 82,869.20/x
  3. Step 3: Cross multiply
    127,350.80x = 191,112.60 × 82,869.20
  4. Step 4: Simplify right side
    127,350.80x = 15,837,348,271.92
  5. Step 5: Solve for x
    x = 15,837,348,271.92/127,350.80
  6. Step 6: Final answer
    x = 124,360.02

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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.