Home / 171,638.10-257,121.98-81,552.61

Finding the Fourth Proportional to 171,638.10, 257,121.98 and 81,552.61

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Solution

The fourth proportional to 171,638.10, 257,121.98 and 81,552.61 is: 122,169.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,638.10 : 257,121.98 = 81,552.61 : x
  2. Step 2: Convert to fraction form
    171,638.10/257,121.98 = 81,552.61/x
  3. Step 3: Cross multiply
    171,638.10x = 257,121.98 × 81,552.61
  4. Step 4: Simplify right side
    171,638.10x = 20,968,968,557.37
  5. Step 5: Solve for x
    x = 20,968,968,557.37/171,638.10
  6. Step 6: Final answer
    x = 122,169.66

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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.