Home / 139,968.14-193,158.14-79,540.11

Finding the Fourth Proportional to 139,968.14, 193,158.14 and 79,540.11

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Solution

The fourth proportional to 139,968.14, 193,158.14 and 79,540.11 is: 109,766.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968.14 : 193,158.14 = 79,540.11 : x
  2. Step 2: Convert to fraction form
    139,968.14/193,158.14 = 79,540.11/x
  3. Step 3: Cross multiply
    139,968.14x = 193,158.14 × 79,540.11
  4. Step 4: Simplify right side
    139,968.14x = 15,363,819,305.29
  5. Step 5: Solve for x
    x = 15,363,819,305.29/139,968.14
  6. Step 6: Final answer
    x = 109,766.55

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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.