Home / 189,401.71-261,375.89-103,361.38

Finding the Fourth Proportional to 189,401.71, 261,375.89 and 103,361.38

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Solution

The fourth proportional to 189,401.71, 261,375.89 and 103,361.38 is: 142,639.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,401.71 : 261,375.89 = 103,361.38 : x
  2. Step 2: Convert to fraction form
    189,401.71/261,375.89 = 103,361.38/x
  3. Step 3: Cross multiply
    189,401.71x = 261,375.89 × 103,361.38
  4. Step 4: Simplify right side
    189,401.71x = 27,016,172,689.13
  5. Step 5: Solve for x
    x = 27,016,172,689.13/189,401.71
  6. Step 6: Final answer
    x = 142,639.54

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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.