Home / 130,107.70-194,979.30-103,499.20

Finding the Fourth Proportional to 130,107.70, 194,979.30 and 103,499.20

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Solution

The fourth proportional to 130,107.70, 194,979.30 and 103,499.20 is: 155,103.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,107.70 : 194,979.30 = 103,499.20 : x
  2. Step 2: Convert to fraction form
    130,107.70/194,979.30 = 103,499.20/x
  3. Step 3: Cross multiply
    130,107.70x = 194,979.30 × 103,499.20
  4. Step 4: Simplify right side
    130,107.70x = 20,180,201,566.56
  5. Step 5: Solve for x
    x = 20,180,201,566.56/130,107.70
  6. Step 6: Final answer
    x = 155,103.82

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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.