Home / 117,035.35-161,463.68-81,207.43

Finding the Fourth Proportional to 117,035.35, 161,463.68 and 81,207.43

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Solution

The fourth proportional to 117,035.35, 161,463.68 and 81,207.43 is: 112,034.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,035.35 : 161,463.68 = 81,207.43 : x
  2. Step 2: Convert to fraction form
    117,035.35/161,463.68 = 81,207.43/x
  3. Step 3: Cross multiply
    117,035.35x = 161,463.68 × 81,207.43
  4. Step 4: Simplify right side
    117,035.35x = 13,112,049,985.97
  5. Step 5: Solve for x
    x = 13,112,049,985.97/117,035.35
  6. Step 6: Final answer
    x = 112,034.96

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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.