Home / 139,836.69-194,315.20-138,398.13

Finding the Fourth Proportional to 139,836.69, 194,315.20 and 138,398.13

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Solution

The fourth proportional to 139,836.69, 194,315.20 and 138,398.13 is: 192,316.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,836.69 : 194,315.20 = 138,398.13 : x
  2. Step 2: Convert to fraction form
    139,836.69/194,315.20 = 138,398.13/x
  3. Step 3: Cross multiply
    139,836.69x = 194,315.20 × 138,398.13
  4. Step 4: Simplify right side
    139,836.69x = 26,892,859,964.58
  5. Step 5: Solve for x
    x = 26,892,859,964.58/139,836.69
  6. Step 6: Final answer
    x = 192,316.19

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.