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Finding the Fourth Proportional to 144,209.96, 199,008.58 and 79,679

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Solution

The fourth proportional to 144,209.96, 199,008.58 and 79,679 is: 109,956.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,209.96 : 199,008.58 = 79,679 : x
  2. Step 2: Convert to fraction form
    144,209.96/199,008.58 = 79,679/x
  3. Step 3: Cross multiply
    144,209.96x = 199,008.58 × 79,679
  4. Step 4: Simplify right side
    144,209.96x = 15,856,804,645.82
  5. Step 5: Solve for x
    x = 15,856,804,645.82/144,209.96
  6. Step 6: Final answer
    x = 109,956.38

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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.