Home / 117,064.28-161,531.32-71,100

Finding the Fourth Proportional to 117,064.28, 161,531.32 and 71,100

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Solution

The fourth proportional to 117,064.28, 161,531.32 and 71,100 is: 98,107.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,064.28 : 161,531.32 = 71,100 : x
  2. Step 2: Convert to fraction form
    117,064.28/161,531.32 = 71,100/x
  3. Step 3: Cross multiply
    117,064.28x = 161,531.32 × 71,100
  4. Step 4: Simplify right side
    117,064.28x = 11,484,876,940.88
  5. Step 5: Solve for x
    x = 11,484,876,940.88/117,064.28
  6. Step 6: Final answer
    x = 98,107.44

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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.