Home / 91,735.40-137,603.10-82,112.60

Finding the Fourth Proportional to 91,735.40, 137,603.10 and 82,112.60

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Solution

The fourth proportional to 91,735.40, 137,603.10 and 82,112.60 is: 123,168.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,735.40 : 137,603.10 = 82,112.60 : x
  2. Step 2: Convert to fraction form
    91,735.40/137,603.10 = 82,112.60/x
  3. Step 3: Cross multiply
    91,735.40x = 137,603.10 × 82,112.60
  4. Step 4: Simplify right side
    91,735.40x = 11,298,948,309.06
  5. Step 5: Solve for x
    x = 11,298,948,309.06/91,735.40
  6. Step 6: Final answer
    x = 123,168.90

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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.