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Finding the Fourth Proportional to 123,081.54, 184,955.85 and 66,963.12

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Solution

The fourth proportional to 123,081.54, 184,955.85 and 66,963.12 is: 100,626.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,081.54 : 184,955.85 = 66,963.12 : x
  2. Step 2: Convert to fraction form
    123,081.54/184,955.85 = 66,963.12/x
  3. Step 3: Cross multiply
    123,081.54x = 184,955.85 × 66,963.12
  4. Step 4: Simplify right side
    123,081.54x = 12,385,220,778.25
  5. Step 5: Solve for x
    x = 12,385,220,778.25/123,081.54
  6. Step 6: Final answer
    x = 100,626.14

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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.