Home / 137,428.28-190,032.78-109,084.76

Finding the Fourth Proportional to 137,428.28, 190,032.78 and 109,084.76

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Solution

The fourth proportional to 137,428.28, 190,032.78 and 109,084.76 is: 150,839.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,428.28 : 190,032.78 = 109,084.76 : x
  2. Step 2: Convert to fraction form
    137,428.28/190,032.78 = 109,084.76/x
  3. Step 3: Cross multiply
    137,428.28x = 190,032.78 × 109,084.76
  4. Step 4: Simplify right side
    137,428.28x = 20,729,680,198.43
  5. Step 5: Solve for x
    x = 20,729,680,198.43/137,428.28
  6. Step 6: Final answer
    x = 150,839.99

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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.