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Finding the Fourth Proportional to 129,758.60, 194,702.70 and 73,641.80

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Solution

The fourth proportional to 129,758.60, 194,702.70 and 73,641.80 is: 110,499.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,758.60 : 194,702.70 = 73,641.80 : x
  2. Step 2: Convert to fraction form
    129,758.60/194,702.70 = 73,641.80/x
  3. Step 3: Cross multiply
    129,758.60x = 194,702.70 × 73,641.80
  4. Step 4: Simplify right side
    129,758.60x = 14,338,257,292.86
  5. Step 5: Solve for x
    x = 14,338,257,292.86/129,758.60
  6. Step 6: Final answer
    x = 110,499.48

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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.