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Finding the Fourth Proportional to 139,337.58, 192,286.20 and 75,674.02

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Solution

The fourth proportional to 139,337.58, 192,286.20 and 75,674.02 is: 104,430.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,337.58 : 192,286.20 = 75,674.02 : x
  2. Step 2: Convert to fraction form
    139,337.58/192,286.20 = 75,674.02/x
  3. Step 3: Cross multiply
    139,337.58x = 192,286.20 × 75,674.02
  4. Step 4: Simplify right side
    139,337.58x = 14,551,069,744.52
  5. Step 5: Solve for x
    x = 14,551,069,744.52/139,337.58
  6. Step 6: Final answer
    x = 104,430.33

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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.