Home / 117,057.66-161,539.38-66,081.12

Finding the Fourth Proportional to 117,057.66, 161,539.38 and 66,081.12

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Solution

The fourth proportional to 117,057.66, 161,539.38 and 66,081.12 is: 91,191.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,057.66 : 161,539.38 = 66,081.12 : x
  2. Step 2: Convert to fraction form
    117,057.66/161,539.38 = 66,081.12/x
  3. Step 3: Cross multiply
    117,057.66x = 161,539.38 × 66,081.12
  4. Step 4: Simplify right side
    117,057.66x = 10,674,703,154.51
  5. Step 5: Solve for x
    x = 10,674,703,154.51/117,057.66
  6. Step 6: Final answer
    x = 91,191.84

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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.