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Finding the Fourth Proportional to 144,358.80, 199,211.49 and 80,702.52

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Solution

The fourth proportional to 144,358.80, 199,211.49 and 80,702.52 is: 111,367.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,358.80 : 199,211.49 = 80,702.52 : x
  2. Step 2: Convert to fraction form
    144,358.80/199,211.49 = 80,702.52/x
  3. Step 3: Cross multiply
    144,358.80x = 199,211.49 × 80,702.52
  4. Step 4: Simplify right side
    144,358.80x = 16,076,869,255.95
  5. Step 5: Solve for x
    x = 16,076,869,255.95/144,358.80
  6. Step 6: Final answer
    x = 111,367.43

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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.