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Finding the Fourth Proportional to 124.60, 168.75 and 124.60

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Solution

The fourth proportional to 124.60, 168.75 and 124.60 is: 168.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.60 : 168.75 = 124.60 : x
  2. Step 2: Convert to fraction form
    124.60/168.75 = 124.60/x
  3. Step 3: Cross multiply
    124.60x = 168.75 × 124.60
  4. Step 4: Simplify right side
    124.60x = 21,026.25
  5. Step 5: Solve for x
    x = 21,026.25/124.60
  6. Step 6: Final answer
    x = 168.75

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.