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Finding the Fourth Proportional to 172,907.79, 259,369.65 and 64,862.97

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Solution

The fourth proportional to 172,907.79, 259,369.65 and 64,862.97 is: 97,297.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,907.79 : 259,369.65 = 64,862.97 : x
  2. Step 2: Convert to fraction form
    172,907.79/259,369.65 = 64,862.97/x
  3. Step 3: Cross multiply
    172,907.79x = 259,369.65 × 64,862.97
  4. Step 4: Simplify right side
    172,907.79x = 16,823,485,826.86
  5. Step 5: Solve for x
    x = 16,823,485,826.86/172,907.79
  6. Step 6: Final answer
    x = 97,297.44

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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.