Home / 117,145.13-161,689.43-66,873.29

Finding the Fourth Proportional to 117,145.13, 161,689.43 and 66,873.29

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Solution

The fourth proportional to 117,145.13, 161,689.43 and 66,873.29 is: 92,301.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,145.13 : 161,689.43 = 66,873.29 : x
  2. Step 2: Convert to fraction form
    117,145.13/161,689.43 = 66,873.29/x
  3. Step 3: Cross multiply
    117,145.13x = 161,689.43 × 66,873.29
  4. Step 4: Simplify right side
    117,145.13x = 10,812,703,501.06
  5. Step 5: Solve for x
    x = 10,812,703,501.06/117,145.13
  6. Step 6: Final answer
    x = 92,301.78

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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.