Home / 103,143.68-154,517.88-69,806.24

Finding the Fourth Proportional to 103,143.68, 154,517.88 and 69,806.24

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Solution

The fourth proportional to 103,143.68, 154,517.88 and 69,806.24 is: 104,575.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,143.68 : 154,517.88 = 69,806.24 : x
  2. Step 2: Convert to fraction form
    103,143.68/154,517.88 = 69,806.24/x
  3. Step 3: Cross multiply
    103,143.68x = 154,517.88 × 69,806.24
  4. Step 4: Simplify right side
    103,143.68x = 10,786,312,215.57
  5. Step 5: Solve for x
    x = 10,786,312,215.57/103,143.68
  6. Step 6: Final answer
    x = 104,575.60

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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.