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Finding the Fourth Proportional to 116.93, 161.34 and 70.29

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Solution

The fourth proportional to 116.93, 161.34 and 70.29 is: 96.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.93 : 161.34 = 70.29 : x
  2. Step 2: Convert to fraction form
    116.93/161.34 = 70.29/x
  3. Step 3: Cross multiply
    116.93x = 161.34 × 70.29
  4. Step 4: Simplify right side
    116.93x = 11,340.59
  5. Step 5: Solve for x
    x = 11,340.59/116.93
  6. Step 6: Final answer
    x = 96.99

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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.