Home / 130,411.20-195,616.80-68,100.80

Finding the Fourth Proportional to 130,411.20, 195,616.80 and 68,100.80

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Solution

The fourth proportional to 130,411.20, 195,616.80 and 68,100.80 is: 102,151.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,411.20 : 195,616.80 = 68,100.80 : x
  2. Step 2: Convert to fraction form
    130,411.20/195,616.80 = 68,100.80/x
  3. Step 3: Cross multiply
    130,411.20x = 195,616.80 × 68,100.80
  4. Step 4: Simplify right side
    130,411.20x = 13,321,660,573.44
  5. Step 5: Solve for x
    x = 13,321,660,573.44/130,411.20
  6. Step 6: Final answer
    x = 102,151.20

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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.