Home / 117,240.78-161,795.30-71,943.80

Finding the Fourth Proportional to 117,240.78, 161,795.30 and 71,943.80

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Solution

The fourth proportional to 117,240.78, 161,795.30 and 71,943.80 is: 99,284.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,240.78 : 161,795.30 = 71,943.80 : x
  2. Step 2: Convert to fraction form
    117,240.78/161,795.30 = 71,943.80/x
  3. Step 3: Cross multiply
    117,240.78x = 161,795.30 × 71,943.80
  4. Step 4: Simplify right side
    117,240.78x = 11,640,167,535.44
  5. Step 5: Solve for x
    x = 11,640,167,535.44/117,240.78
  6. Step 6: Final answer
    x = 99,284.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.