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Finding the Fourth Proportional to 123,348.70, 185,109.45 and 79,083.10

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Solution

The fourth proportional to 123,348.70, 185,109.45 and 79,083.10 is: 118,680.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,348.70 : 185,109.45 = 79,083.10 : x
  2. Step 2: Convert to fraction form
    123,348.70/185,109.45 = 79,083.10/x
  3. Step 3: Cross multiply
    123,348.70x = 185,109.45 × 79,083.10
  4. Step 4: Simplify right side
    123,348.70x = 14,639,029,145.30
  5. Step 5: Solve for x
    x = 14,639,029,145.30/123,348.70
  6. Step 6: Final answer
    x = 118,680.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.