Home / 130,685.20-195,736.20-100,869.10

Finding the Fourth Proportional to 130,685.20, 195,736.20 and 100,869.10

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Solution

The fourth proportional to 130,685.20, 195,736.20 and 100,869.10 is: 151,078.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,685.20 : 195,736.20 = 100,869.10 : x
  2. Step 2: Convert to fraction form
    130,685.20/195,736.20 = 100,869.10/x
  3. Step 3: Cross multiply
    130,685.20x = 195,736.20 × 100,869.10
  4. Step 4: Simplify right side
    130,685.20x = 19,743,734,331.42
  5. Step 5: Solve for x
    x = 19,743,734,331.42/130,685.20
  6. Step 6: Final answer
    x = 151,078.58

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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.