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Finding the Fourth Proportional to 209,122.92, 313,687.80 and 75,920.04

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Solution

The fourth proportional to 209,122.92, 313,687.80 and 75,920.04 is: 113,881.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,122.92 : 313,687.80 = 75,920.04 : x
  2. Step 2: Convert to fraction form
    209,122.92/313,687.80 = 75,920.04/x
  3. Step 3: Cross multiply
    209,122.92x = 313,687.80 × 75,920.04
  4. Step 4: Simplify right side
    209,122.92x = 23,815,190,323.51
  5. Step 5: Solve for x
    x = 23,815,190,323.51/209,122.92
  6. Step 6: Final answer
    x = 113,881.30

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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.