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Finding the Fourth Proportional to 136,034.10, 204,051.15 and 85,951.80

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Solution

The fourth proportional to 136,034.10, 204,051.15 and 85,951.80 is: 128,927.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,034.10 : 204,051.15 = 85,951.80 : x
  2. Step 2: Convert to fraction form
    136,034.10/204,051.15 = 85,951.80/x
  3. Step 3: Cross multiply
    136,034.10x = 204,051.15 × 85,951.80
  4. Step 4: Simplify right side
    136,034.10x = 17,538,563,634.57
  5. Step 5: Solve for x
    x = 17,538,563,634.57/136,034.10
  6. Step 6: Final answer
    x = 128,927.70

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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.