Home / 68,778.29-103,160.52-18,863.40

Finding the Fourth Proportional to 68,778.29, 103,160.52 and 18,863.40

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Solution

The fourth proportional to 68,778.29, 103,160.52 and 18,863.40 is: 28,293.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,778.29 : 103,160.52 = 18,863.40 : x
  2. Step 2: Convert to fraction form
    68,778.29/103,160.52 = 18,863.40/x
  3. Step 3: Cross multiply
    68,778.29x = 103,160.52 × 18,863.40
  4. Step 4: Simplify right side
    68,778.29x = 1,945,958,152.97
  5. Step 5: Solve for x
    x = 1,945,958,152.97/68,778.29
  6. Step 6: Final answer
    x = 28,293.20

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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.