Home / 69,120.38-103,519.69-67,228.02

Finding the Fourth Proportional to 69,120.38, 103,519.69 and 67,228.02

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Solution

The fourth proportional to 69,120.38, 103,519.69 and 67,228.02 is: 100,685.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,120.38 : 103,519.69 = 67,228.02 : x
  2. Step 2: Convert to fraction form
    69,120.38/103,519.69 = 67,228.02/x
  3. Step 3: Cross multiply
    69,120.38x = 103,519.69 × 67,228.02
  4. Step 4: Simplify right side
    69,120.38x = 6,959,423,621.64
  5. Step 5: Solve for x
    x = 6,959,423,621.64/69,120.38
  6. Step 6: Final answer
    x = 100,685.55

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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.