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Finding the Fourth Proportional to 172,862.30, 259,086.40 and 112,919.27

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Solution

The fourth proportional to 172,862.30, 259,086.40 and 112,919.27 is: 169,243.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,862.30 : 259,086.40 = 112,919.27 : x
  2. Step 2: Convert to fraction form
    172,862.30/259,086.40 = 112,919.27/x
  3. Step 3: Cross multiply
    172,862.30x = 259,086.40 × 112,919.27
  4. Step 4: Simplify right side
    172,862.30x = 29,255,845,577.20
  5. Step 5: Solve for x
    x = 29,255,845,577.20/172,862.30
  6. Step 6: Final answer
    x = 169,243.64

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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.