Home / 130,161.20-195,037.60-77,541.92

Finding the Fourth Proportional to 130,161.20, 195,037.60 and 77,541.92

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Solution

The fourth proportional to 130,161.20, 195,037.60 and 77,541.92 is: 116,191.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,161.20 : 195,037.60 = 77,541.92 : x
  2. Step 2: Convert to fraction form
    130,161.20/195,037.60 = 77,541.92/x
  3. Step 3: Cross multiply
    130,161.20x = 195,037.60 × 77,541.92
  4. Step 4: Simplify right side
    130,161.20x = 15,123,589,976.19
  5. Step 5: Solve for x
    x = 15,123,589,976.19/130,161.20
  6. Step 6: Final answer
    x = 116,191.23

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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.