Home / 103,626.21-155,439.30-68,557.66

Finding the Fourth Proportional to 103,626.21, 155,439.30 and 68,557.66

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Solution

The fourth proportional to 103,626.21, 155,439.30 and 68,557.66 is: 102,836.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,626.21 : 155,439.30 = 68,557.66 : x
  2. Step 2: Convert to fraction form
    103,626.21/155,439.30 = 68,557.66/x
  3. Step 3: Cross multiply
    103,626.21x = 155,439.30 × 68,557.66
  4. Step 4: Simplify right side
    103,626.21x = 10,656,554,680.04
  5. Step 5: Solve for x
    x = 10,656,554,680.04/103,626.21
  6. Step 6: Final answer
    x = 102,836.48

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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.