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Finding the Fourth Proportional to 172,699.38, 258,974.96 and 60,345.90

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Solution

The fourth proportional to 172,699.38, 258,974.96 and 60,345.90 is: 90,492.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,699.38 : 258,974.96 = 60,345.90 : x
  2. Step 2: Convert to fraction form
    172,699.38/258,974.96 = 60,345.90/x
  3. Step 3: Cross multiply
    172,699.38x = 258,974.96 × 60,345.90
  4. Step 4: Simplify right side
    172,699.38x = 15,628,076,736.93
  5. Step 5: Solve for x
    x = 15,628,076,736.93/172,699.38
  6. Step 6: Final answer
    x = 90,492.95

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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.