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Finding the Fourth Proportional to 144,071.01, 198,821.18 and 79,540.05

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Solution

The fourth proportional to 144,071.01, 198,821.18 and 79,540.05 is: 109,767.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,071.01 : 198,821.18 = 79,540.05 : x
  2. Step 2: Convert to fraction form
    144,071.01/198,821.18 = 79,540.05/x
  3. Step 3: Cross multiply
    144,071.01x = 198,821.18 × 79,540.05
  4. Step 4: Simplify right side
    144,071.01x = 15,814,246,200.56
  5. Step 5: Solve for x
    x = 15,814,246,200.56/144,071.01
  6. Step 6: Final answer
    x = 109,767.03

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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.