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Finding the Fourth Proportional to 172,731.78, 259,172.73 and 60,492.51

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Solution

The fourth proportional to 172,731.78, 259,172.73 and 60,492.51 is: 90,765.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,731.78 : 259,172.73 = 60,492.51 : x
  2. Step 2: Convert to fraction form
    172,731.78/259,172.73 = 60,492.51/x
  3. Step 3: Cross multiply
    172,731.78x = 259,172.73 × 60,492.51
  4. Step 4: Simplify right side
    172,731.78x = 15,678,008,961.25
  5. Step 5: Solve for x
    x = 15,678,008,961.25/172,731.78
  6. Step 6: Final answer
    x = 90,765.05

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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.