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Finding the Fourth Proportional to 192,081.20, 287,862.60 and 136,612.40

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Solution

The fourth proportional to 192,081.20, 287,862.60 and 136,612.40 is: 204,734.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,081.20 : 287,862.60 = 136,612.40 : x
  2. Step 2: Convert to fraction form
    192,081.20/287,862.60 = 136,612.40/x
  3. Step 3: Cross multiply
    192,081.20x = 287,862.60 × 136,612.40
  4. Step 4: Simplify right side
    192,081.20x = 39,325,600,656.24
  5. Step 5: Solve for x
    x = 39,325,600,656.24/192,081.20
  6. Step 6: Final answer
    x = 204,734.25

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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.