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Finding the Fourth Proportional to 139,360.81, 192,318.11 and 75,698.62

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Solution

The fourth proportional to 139,360.81, 192,318.11 and 75,698.62 is: 104,464.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,360.81 : 192,318.11 = 75,698.62 : x
  2. Step 2: Convert to fraction form
    139,360.81/192,318.11 = 75,698.62/x
  3. Step 3: Cross multiply
    139,360.81x = 192,318.11 × 75,698.62
  4. Step 4: Simplify right side
    139,360.81x = 14,558,215,528.01
  5. Step 5: Solve for x
    x = 14,558,215,528.01/139,360.81
  6. Step 6: Final answer
    x = 104,464.20

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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.