Home / 139,378.42-192,343.01-75,716.37

Finding the Fourth Proportional to 139,378.42, 192,343.01 and 75,716.37

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Solution

The fourth proportional to 139,378.42, 192,343.01 and 75,716.37 is: 104,489.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,378.42 : 192,343.01 = 75,716.37 : x
  2. Step 2: Convert to fraction form
    139,378.42/192,343.01 = 75,716.37/x
  3. Step 3: Cross multiply
    139,378.42x = 192,343.01 × 75,716.37
  4. Step 4: Simplify right side
    139,378.42x = 14,563,514,133.49
  5. Step 5: Solve for x
    x = 14,563,514,133.49/139,378.42
  6. Step 6: Final answer
    x = 104,489.02

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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.