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Finding the Fourth Proportional to 112,399.95, 168,103.94 and 100,006.95

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Solution

The fourth proportional to 112,399.95, 168,103.94 and 100,006.95 is: 149,569.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,399.95 : 168,103.94 = 100,006.95 : x
  2. Step 2: Convert to fraction form
    112,399.95/168,103.94 = 100,006.95/x
  3. Step 3: Cross multiply
    112,399.95x = 168,103.94 × 100,006.95
  4. Step 4: Simplify right side
    112,399.95x = 16,811,561,822.35
  5. Step 5: Solve for x
    x = 16,811,561,822.35/112,399.95
  6. Step 6: Final answer
    x = 149,569.12

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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.