Home / 91,121.49-136,690.71-34,180.20

Finding the Fourth Proportional to 91,121.49, 136,690.71 and 34,180.20

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Solution

The fourth proportional to 91,121.49, 136,690.71 and 34,180.20 is: 51,273.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,121.49 : 136,690.71 = 34,180.20 : x
  2. Step 2: Convert to fraction form
    91,121.49/136,690.71 = 34,180.20/x
  3. Step 3: Cross multiply
    91,121.49x = 136,690.71 × 34,180.20
  4. Step 4: Simplify right side
    91,121.49x = 4,672,115,805.94
  5. Step 5: Solve for x
    x = 4,672,115,805.94/91,121.49
  6. Step 6: Final answer
    x = 51,273.48

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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.