Home / 91,949.70-137,924.55-81,927.30

Finding the Fourth Proportional to 91,949.70, 137,924.55 and 81,927.30

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Solution

The fourth proportional to 91,949.70, 137,924.55 and 81,927.30 is: 122,890.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,949.70 : 137,924.55 = 81,927.30 : x
  2. Step 2: Convert to fraction form
    91,949.70/137,924.55 = 81,927.30/x
  3. Step 3: Cross multiply
    91,949.70x = 137,924.55 × 81,927.30
  4. Step 4: Simplify right side
    91,949.70x = 11,299,785,985.22
  5. Step 5: Solve for x
    x = 11,299,785,985.22/91,949.70
  6. Step 6: Final answer
    x = 122,890.95

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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.