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Finding the Fourth Proportional to 116.45, 160.67 and 75.02

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Solution

The fourth proportional to 116.45, 160.67 and 75.02 is: 103.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.45 : 160.67 = 75.02 : x
  2. Step 2: Convert to fraction form
    116.45/160.67 = 75.02/x
  3. Step 3: Cross multiply
    116.45x = 160.67 × 75.02
  4. Step 4: Simplify right side
    116.45x = 12,053.53
  5. Step 5: Solve for x
    x = 12,053.53/116.45
  6. Step 6: Final answer
    x = 103.51

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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.