Home / 139,795.31-192,922.99-79,371.58

Finding the Fourth Proportional to 139,795.31, 192,922.99 and 79,371.58

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Solution

The fourth proportional to 139,795.31, 192,922.99 and 79,371.58 is: 109,535.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,795.31 : 192,922.99 = 79,371.58 : x
  2. Step 2: Convert to fraction form
    139,795.31/192,922.99 = 79,371.58/x
  3. Step 3: Cross multiply
    139,795.31x = 192,922.99 × 79,371.58
  4. Step 4: Simplify right side
    139,795.31x = 15,312,601,371.58
  5. Step 5: Solve for x
    x = 15,312,601,371.58/139,795.31
  6. Step 6: Final answer
    x = 109,535.87

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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.