Home / 130,743.60-195,856.20-77,996.40

Finding the Fourth Proportional to 130,743.60, 195,856.20 and 77,996.40

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Solution

The fourth proportional to 130,743.60, 195,856.20 and 77,996.40 is: 116,839.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,743.60 : 195,856.20 = 77,996.40 : x
  2. Step 2: Convert to fraction form
    130,743.60/195,856.20 = 77,996.40/x
  3. Step 3: Cross multiply
    130,743.60x = 195,856.20 × 77,996.40
  4. Step 4: Simplify right side
    130,743.60x = 15,276,078,517.68
  5. Step 5: Solve for x
    x = 15,276,078,517.68/130,743.60
  6. Step 6: Final answer
    x = 116,839.97

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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.