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Finding the Fourth Proportional to 143,482.01, 198,005.17 and 79,819.80

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Solution

The fourth proportional to 143,482.01, 198,005.17 and 79,819.80 is: 110,151.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,482.01 : 198,005.17 = 79,819.80 : x
  2. Step 2: Convert to fraction form
    143,482.01/198,005.17 = 79,819.80/x
  3. Step 3: Cross multiply
    143,482.01x = 198,005.17 × 79,819.80
  4. Step 4: Simplify right side
    143,482.01x = 15,804,734,058.87
  5. Step 5: Solve for x
    x = 15,804,734,058.87/143,482.01
  6. Step 6: Final answer
    x = 110,151.33

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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.