Home / 139,742.31-192,834.66-79,314.18

Finding the Fourth Proportional to 139,742.31, 192,834.66 and 79,314.18

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Solution

The fourth proportional to 139,742.31, 192,834.66 and 79,314.18 is: 109,448.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,742.31 : 192,834.66 = 79,314.18 : x
  2. Step 2: Convert to fraction form
    139,742.31/192,834.66 = 79,314.18/x
  3. Step 3: Cross multiply
    139,742.31x = 192,834.66 × 79,314.18
  4. Step 4: Simplify right side
    139,742.31x = 15,294,522,536.91
  5. Step 5: Solve for x
    x = 15,294,522,536.91/139,742.31
  6. Step 6: Final answer
    x = 109,448.04

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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.