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Finding the Fourth Proportional to 139,922.16, 193,097.79 and 79,503.04

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Solution

The fourth proportional to 139,922.16, 193,097.79 and 79,503.04 is: 109,717.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,922.16 : 193,097.79 = 79,503.04 : x
  2. Step 2: Convert to fraction form
    139,922.16/193,097.79 = 79,503.04/x
  3. Step 3: Cross multiply
    139,922.16x = 193,097.79 × 79,503.04
  4. Step 4: Simplify right side
    139,922.16x = 15,351,861,563.65
  5. Step 5: Solve for x
    x = 15,351,861,563.65/139,922.16
  6. Step 6: Final answer
    x = 109,717.16

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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.