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Finding the Fourth Proportional to 136,407.60, 204,480.12 and 69,879.12

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Solution

The fourth proportional to 136,407.60, 204,480.12 and 69,879.12 is: 104,751.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,407.60 : 204,480.12 = 69,879.12 : x
  2. Step 2: Convert to fraction form
    136,407.60/204,480.12 = 69,879.12/x
  3. Step 3: Cross multiply
    136,407.60x = 204,480.12 × 69,879.12
  4. Step 4: Simplify right side
    136,407.60x = 14,288,890,843.09
  5. Step 5: Solve for x
    x = 14,288,890,843.09/136,407.60
  6. Step 6: Final answer
    x = 104,751.43

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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.