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Finding the Fourth Proportional to 139,351.04, 192,305.44 and 75,688.84

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Solution

The fourth proportional to 139,351.04, 192,305.44 and 75,688.84 is: 104,451.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,351.04 : 192,305.44 = 75,688.84 : x
  2. Step 2: Convert to fraction form
    139,351.04/192,305.44 = 75,688.84/x
  3. Step 3: Cross multiply
    139,351.04x = 192,305.44 × 75,688.84
  4. Step 4: Simplify right side
    139,351.04x = 14,555,375,679.29
  5. Step 5: Solve for x
    x = 14,555,375,679.29/139,351.04
  6. Step 6: Final answer
    x = 104,451.14

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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.