Home / 91,723.40-137,325.90-82,392.20

Finding the Fourth Proportional to 91,723.40, 137,325.90 and 82,392.20

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Solution

The fourth proportional to 91,723.40, 137,325.90 and 82,392.20 is: 123,355.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,723.40 : 137,325.90 = 82,392.20 : x
  2. Step 2: Convert to fraction form
    91,723.40/137,325.90 = 82,392.20/x
  3. Step 3: Cross multiply
    91,723.40x = 137,325.90 × 82,392.20
  4. Step 4: Simplify right side
    91,723.40x = 11,314,583,017.98
  5. Step 5: Solve for x
    x = 11,314,583,017.98/91,723.40
  6. Step 6: Final answer
    x = 123,355.47

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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.