Home / 117,215.36-161,765.88-66,233.96

Finding the Fourth Proportional to 117,215.36, 161,765.88 and 66,233.96

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Solution

The fourth proportional to 117,215.36, 161,765.88 and 66,233.96 is: 91,407.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,215.36 : 161,765.88 = 66,233.96 : x
  2. Step 2: Convert to fraction form
    117,215.36/161,765.88 = 66,233.96/x
  3. Step 3: Cross multiply
    117,215.36x = 161,765.88 × 66,233.96
  4. Step 4: Simplify right side
    117,215.36x = 10,714,394,825.28
  5. Step 5: Solve for x
    x = 10,714,394,825.28/117,215.36
  6. Step 6: Final answer
    x = 91,407.77

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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.