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Finding the Fourth Proportional to 144,171.55, 198,962.36 and 79,644.11

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Solution

The fourth proportional to 144,171.55, 198,962.36 and 79,644.11 is: 109,911.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,171.55 : 198,962.36 = 79,644.11 : x
  2. Step 2: Convert to fraction form
    144,171.55/198,962.36 = 79,644.11/x
  3. Step 3: Cross multiply
    144,171.55x = 198,962.36 × 79,644.11
  4. Step 4: Simplify right side
    144,171.55x = 15,846,180,782.22
  5. Step 5: Solve for x
    x = 15,846,180,782.22/144,171.55
  6. Step 6: Final answer
    x = 109,911.98

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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.