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Finding the Fourth Proportional to 119,882.92, 165,504.72 and 72,148

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Solution

The fourth proportional to 119,882.92, 165,504.72 and 72,148 is: 99,604.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,882.92 : 165,504.72 = 72,148 : x
  2. Step 2: Convert to fraction form
    119,882.92/165,504.72 = 72,148/x
  3. Step 3: Cross multiply
    119,882.92x = 165,504.72 × 72,148
  4. Step 4: Simplify right side
    119,882.92x = 11,940,834,538.56
  5. Step 5: Solve for x
    x = 11,940,834,538.56/119,882.92
  6. Step 6: Final answer
    x = 99,604.13

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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.