Home / 105,414.20-158,121.30-69,984.80

Finding the Fourth Proportional to 105,414.20, 158,121.30 and 69,984.80

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Solution

The fourth proportional to 105,414.20, 158,121.30 and 69,984.80 is: 104,977.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,414.20 : 158,121.30 = 69,984.80 : x
  2. Step 2: Convert to fraction form
    105,414.20/158,121.30 = 69,984.80/x
  3. Step 3: Cross multiply
    105,414.20x = 158,121.30 × 69,984.80
  4. Step 4: Simplify right side
    105,414.20x = 11,066,087,556.24
  5. Step 5: Solve for x
    x = 11,066,087,556.24/105,414.20
  6. Step 6: Final answer
    x = 104,977.20

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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.