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Finding the Fourth Proportional to 116,959.40, 161,394.66 and 65,955.78

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Solution

The fourth proportional to 116,959.40, 161,394.66 and 65,955.78 is: 91,013.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,959.40 : 161,394.66 = 65,955.78 : x
  2. Step 2: Convert to fraction form
    116,959.40/161,394.66 = 65,955.78/x
  3. Step 3: Cross multiply
    116,959.40x = 161,394.66 × 65,955.78
  4. Step 4: Simplify right side
    116,959.40x = 10,644,910,688.13
  5. Step 5: Solve for x
    x = 10,644,910,688.13/116,959.40
  6. Step 6: Final answer
    x = 91,013.73

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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.