Home / 117,057.16-161,538.68-66,080.64

Finding the Fourth Proportional to 117,057.16, 161,538.68 and 66,080.64

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Solution

The fourth proportional to 117,057.16, 161,538.68 and 66,080.64 is: 91,191.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,057.16 : 161,538.68 = 66,080.64 : x
  2. Step 2: Convert to fraction form
    117,057.16/161,538.68 = 66,080.64/x
  3. Step 3: Cross multiply
    117,057.16x = 161,538.68 × 66,080.64
  4. Step 4: Simplify right side
    117,057.16x = 10,674,579,359.16
  5. Step 5: Solve for x
    x = 10,674,579,359.16/117,057.16
  6. Step 6: Final answer
    x = 91,191.17

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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.