Home / 69,319.40-103,979.10-68,736.20

Finding the Fourth Proportional to 69,319.40, 103,979.10 and 68,736.20

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Solution

The fourth proportional to 69,319.40, 103,979.10 and 68,736.20 is: 103,104.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,319.40 : 103,979.10 = 68,736.20 : x
  2. Step 2: Convert to fraction form
    69,319.40/103,979.10 = 68,736.20/x
  3. Step 3: Cross multiply
    69,319.40x = 103,979.10 × 68,736.20
  4. Step 4: Simplify right side
    69,319.40x = 7,147,128,213.42
  5. Step 5: Solve for x
    x = 7,147,128,213.42/69,319.40
  6. Step 6: Final answer
    x = 103,104.30

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1.5x scale

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.