Home / 91,824.70-137,737.05-82,639.30

Finding the Fourth Proportional to 91,824.70, 137,737.05 and 82,639.30

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Solution

The fourth proportional to 91,824.70, 137,737.05 and 82,639.30 is: 123,958.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,824.70 : 137,737.05 = 82,639.30 : x
  2. Step 2: Convert to fraction form
    91,824.70/137,737.05 = 82,639.30/x
  3. Step 3: Cross multiply
    91,824.70x = 137,737.05 × 82,639.30
  4. Step 4: Simplify right side
    91,824.70x = 11,382,493,396.07
  5. Step 5: Solve for x
    x = 11,382,493,396.07/91,824.70
  6. Step 6: Final answer
    x = 123,958.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.