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Finding the Fourth Proportional to 113,067.05, 169,400.99 and 68,603.51

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Solution

The fourth proportional to 113,067.05, 169,400.99 and 68,603.51 is: 102,784.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,067.05 : 169,400.99 = 68,603.51 : x
  2. Step 2: Convert to fraction form
    113,067.05/169,400.99 = 68,603.51/x
  3. Step 3: Cross multiply
    113,067.05x = 169,400.99 × 68,603.51
  4. Step 4: Simplify right side
    113,067.05x = 11,621,501,321.45
  5. Step 5: Solve for x
    x = 11,621,501,321.45/113,067.05
  6. Step 6: Final answer
    x = 102,784.16

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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.