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Finding the Fourth Proportional to 136,863.52, 188,769.36 and 92,142.88

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Solution

The fourth proportional to 136,863.52, 188,769.36 and 92,142.88 is: 127,088.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,863.52 : 188,769.36 = 92,142.88 : x
  2. Step 2: Convert to fraction form
    136,863.52/188,769.36 = 92,142.88/x
  3. Step 3: Cross multiply
    136,863.52x = 188,769.36 × 92,142.88
  4. Step 4: Simplify right side
    136,863.52x = 17,393,752,486.16
  5. Step 5: Solve for x
    x = 17,393,752,486.16/136,863.52
  6. Step 6: Final answer
    x = 127,088.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.