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Finding the Fourth Proportional to 163,616.91, 225,808.39 and 99,997.08

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Solution

The fourth proportional to 163,616.91, 225,808.39 and 99,997.08 is: 138,006.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,616.91 : 225,808.39 = 99,997.08 : x
  2. Step 2: Convert to fraction form
    163,616.91/225,808.39 = 99,997.08/x
  3. Step 3: Cross multiply
    163,616.91x = 225,808.39 × 99,997.08
  4. Step 4: Simplify right side
    163,616.91x = 22,580,179,639.50
  5. Step 5: Solve for x
    x = 22,580,179,639.50/163,616.91
  6. Step 6: Final answer
    x = 138,006.39

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.