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Finding the Fourth Proportional to 144,788.92, 199,806.78 and 81,127.96

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Solution

The fourth proportional to 144,788.92, 199,806.78 and 81,127.96 is: 111,955.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,788.92 : 199,806.78 = 81,127.96 : x
  2. Step 2: Convert to fraction form
    144,788.92/199,806.78 = 81,127.96/x
  3. Step 3: Cross multiply
    144,788.92x = 199,806.78 × 81,127.96
  4. Step 4: Simplify right side
    144,788.92x = 16,209,916,455.57
  5. Step 5: Solve for x
    x = 16,209,916,455.57/144,788.92
  6. Step 6: Final answer
    x = 111,955.50

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Why These Related Problems?

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