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Finding the Fourth Proportional to 144,644.32, 199,630.12 and 80,986.22

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Solution

The fourth proportional to 144,644.32, 199,630.12 and 80,986.22 is: 111,772.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,644.32 : 199,630.12 = 80,986.22 : x
  2. Step 2: Convert to fraction form
    144,644.32/199,630.12 = 80,986.22/x
  3. Step 3: Cross multiply
    144,644.32x = 199,630.12 × 80,986.22
  4. Step 4: Simplify right side
    144,644.32x = 16,167,288,816.95
  5. Step 5: Solve for x
    x = 16,167,288,816.95/144,644.32
  6. Step 6: Final answer
    x = 111,772.72

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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.