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Finding the Fourth Proportional to 129,951.90, 194,927.85 and 122,078.70

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Solution

The fourth proportional to 129,951.90, 194,927.85 and 122,078.70 is: 183,118.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,951.90 : 194,927.85 = 122,078.70 : x
  2. Step 2: Convert to fraction form
    129,951.90/194,927.85 = 122,078.70/x
  3. Step 3: Cross multiply
    129,951.90x = 194,927.85 × 122,078.70
  4. Step 4: Simplify right side
    129,951.90x = 23,796,538,521.80
  5. Step 5: Solve for x
    x = 23,796,538,521.80/129,951.90
  6. Step 6: Final answer
    x = 183,118.05

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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.