Home / 167,905.16-231,714.79-91,427.21

Finding the Fourth Proportional to 167,905.16, 231,714.79 and 91,427.21

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Solution

The fourth proportional to 167,905.16, 231,714.79 and 91,427.21 is: 126,172.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,905.16 : 231,714.79 = 91,427.21 : x
  2. Step 2: Convert to fraction form
    167,905.16/231,714.79 = 91,427.21/x
  3. Step 3: Cross multiply
    167,905.16x = 231,714.79 × 91,427.21
  4. Step 4: Simplify right side
    167,905.16x = 21,185,037,116.15
  5. Step 5: Solve for x
    x = 21,185,037,116.15/167,905.16
  6. Step 6: Final answer
    x = 126,172.64

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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.