Home / 91,823.70-137,735.55-82,638.30

Finding the Fourth Proportional to 91,823.70, 137,735.55 and 82,638.30

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Solution

The fourth proportional to 91,823.70, 137,735.55 and 82,638.30 is: 123,957.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,823.70 : 137,735.55 = 82,638.30 : x
  2. Step 2: Convert to fraction form
    91,823.70/137,735.55 = 82,638.30/x
  3. Step 3: Cross multiply
    91,823.70x = 137,735.55 × 82,638.30
  4. Step 4: Simplify right side
    91,823.70x = 11,382,231,701.57
  5. Step 5: Solve for x
    x = 11,382,231,701.57/91,823.70
  6. Step 6: Final answer
    x = 123,957.45

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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.