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Finding the Fourth Proportional to 124.16, 170.32 and 116.80

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Solution

The fourth proportional to 124.16, 170.32 and 116.80 is: 160.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.16 : 170.32 = 116.80 : x
  2. Step 2: Convert to fraction form
    124.16/170.32 = 116.80/x
  3. Step 3: Cross multiply
    124.16x = 170.32 × 116.80
  4. Step 4: Simplify right side
    124.16x = 19,893.38
  5. Step 5: Solve for x
    x = 19,893.38/124.16
  6. Step 6: Final answer
    x = 160.22

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.