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Finding the Fourth Proportional to 144,054.87, 198,806.73 and 79,536.54

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Solution

The fourth proportional to 144,054.87, 198,806.73 and 79,536.54 is: 109,766.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,054.87 : 198,806.73 = 79,536.54 : x
  2. Step 2: Convert to fraction form
    144,054.87/198,806.73 = 79,536.54/x
  3. Step 3: Cross multiply
    144,054.87x = 198,806.73 × 79,536.54
  4. Step 4: Simplify right side
    144,054.87x = 15,812,399,432.91
  5. Step 5: Solve for x
    x = 15,812,399,432.91/144,054.87
  6. Step 6: Final answer
    x = 109,766.50

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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.