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Finding the Fourth Proportional to 139,767.66, 192,873.35 and 79,337.21

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Solution

The fourth proportional to 139,767.66, 192,873.35 and 79,337.21 is: 109,481.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,767.66 : 192,873.35 = 79,337.21 : x
  2. Step 2: Convert to fraction form
    139,767.66/192,873.35 = 79,337.21/x
  3. Step 3: Cross multiply
    139,767.66x = 192,873.35 × 79,337.21
  4. Step 4: Simplify right side
    139,767.66x = 15,302,032,706.33
  5. Step 5: Solve for x
    x = 15,302,032,706.33/139,767.66
  6. Step 6: Final answer
    x = 109,481.93

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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.