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Finding the Fourth Proportional to 119.93, 165.50 and 70.84

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Solution

The fourth proportional to 119.93, 165.50 and 70.84 is: 97.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    119.93 : 165.50 = 70.84 : x
  2. Step 2: Convert to fraction form
    119.93/165.50 = 70.84/x
  3. Step 3: Cross multiply
    119.93x = 165.50 × 70.84
  4. Step 4: Simplify right side
    119.93x = 11,724.02
  5. Step 5: Solve for x
    x = 11,724.02/119.93
  6. Step 6: Final answer
    x = 97.76

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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.