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Finding the Fourth Proportional to 144,039.62, 198,774.69 and 79,508.88

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Solution

The fourth proportional to 144,039.62, 198,774.69 and 79,508.88 is: 109,722.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,039.62 : 198,774.69 = 79,508.88 : x
  2. Step 2: Convert to fraction form
    144,039.62/198,774.69 = 79,508.88/x
  3. Step 3: Cross multiply
    144,039.62x = 198,774.69 × 79,508.88
  4. Step 4: Simplify right side
    144,039.62x = 15,804,352,974.25
  5. Step 5: Solve for x
    x = 15,804,352,974.25/144,039.62
  6. Step 6: Final answer
    x = 109,722.26

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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.