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Finding the Fourth Proportional to 170,954.92, 256,406.46 and 60,121

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Solution

The fourth proportional to 170,954.92, 256,406.46 and 60,121 is: 90,172.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,954.92 : 256,406.46 = 60,121 : x
  2. Step 2: Convert to fraction form
    170,954.92/256,406.46 = 60,121/x
  3. Step 3: Cross multiply
    170,954.92x = 256,406.46 × 60,121
  4. Step 4: Simplify right side
    170,954.92x = 15,415,412,781.66
  5. Step 5: Solve for x
    x = 15,415,412,781.66/170,954.92
  6. Step 6: Final answer
    x = 90,172.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.