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Finding the Fourth Proportional to 172,908.79, 259,371.15 and 64,863.97

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Solution

The fourth proportional to 172,908.79, 259,371.15 and 64,863.97 is: 97,298.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,908.79 : 259,371.15 = 64,863.97 : x
  2. Step 2: Convert to fraction form
    172,908.79/259,371.15 = 64,863.97/x
  3. Step 3: Cross multiply
    172,908.79x = 259,371.15 × 64,863.97
  4. Step 4: Simplify right side
    172,908.79x = 16,823,842,492.47
  5. Step 5: Solve for x
    x = 16,823,842,492.47/172,908.79
  6. Step 6: Final answer
    x = 97,298.94

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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.