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Finding the Fourth Proportional to 172,010.94, 257,753.30 and 72,116.61

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Solution

The fourth proportional to 172,010.94, 257,753.30 and 72,116.61 is: 108,064.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,010.94 : 257,753.30 = 72,116.61 : x
  2. Step 2: Convert to fraction form
    172,010.94/257,753.30 = 72,116.61/x
  3. Step 3: Cross multiply
    172,010.94x = 257,753.30 × 72,116.61
  4. Step 4: Simplify right side
    172,010.94x = 18,588,293,851.73
  5. Step 5: Solve for x
    x = 18,588,293,851.73/172,010.94
  6. Step 6: Final answer
    x = 108,064.60

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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.