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Finding the Fourth Proportional to 143,575.01, 198,130.15 and 79,911.44

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Solution

The fourth proportional to 143,575.01, 198,130.15 and 79,911.44 is: 110,275.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,575.01 : 198,130.15 = 79,911.44 : x
  2. Step 2: Convert to fraction form
    143,575.01/198,130.15 = 79,911.44/x
  3. Step 3: Cross multiply
    143,575.01x = 198,130.15 × 79,911.44
  4. Step 4: Simplify right side
    143,575.01x = 15,832,865,593.92
  5. Step 5: Solve for x
    x = 15,832,865,593.92/143,575.01
  6. Step 6: Final answer
    x = 110,275.91

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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.