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Finding the Fourth Proportional to 125.54, 172.59 and 124.76

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Solution

The fourth proportional to 125.54, 172.59 and 124.76 is: 171.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    125.54 : 172.59 = 124.76 : x
  2. Step 2: Convert to fraction form
    125.54/172.59 = 124.76/x
  3. Step 3: Cross multiply
    125.54x = 172.59 × 124.76
  4. Step 4: Simplify right side
    125.54x = 21,532.33
  5. Step 5: Solve for x
    x = 21,532.33/125.54
  6. Step 6: Final answer
    x = 171.52

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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.