Home / 103,638.39-155,440.19-28,766.14

Finding the Fourth Proportional to 103,638.39, 155,440.19 and 28,766.14

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Solution

The fourth proportional to 103,638.39, 155,440.19 and 28,766.14 is: 43,144.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,638.39 : 155,440.19 = 28,766.14 : x
  2. Step 2: Convert to fraction form
    103,638.39/155,440.19 = 28,766.14/x
  3. Step 3: Cross multiply
    103,638.39x = 155,440.19 × 28,766.14
  4. Step 4: Simplify right side
    103,638.39x = 4,471,414,339.08
  5. Step 5: Solve for x
    x = 4,471,414,339.08/103,638.39
  6. Step 6: Final answer
    x = 43,144.38

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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.