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Finding the Fourth Proportional to 165,776.88, 248,665.08 and 76,981.82

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Solution

The fourth proportional to 165,776.88, 248,665.08 and 76,981.82 is: 115,472.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,776.88 : 248,665.08 = 76,981.82 : x
  2. Step 2: Convert to fraction form
    165,776.88/248,665.08 = 76,981.82/x
  3. Step 3: Cross multiply
    165,776.88x = 248,665.08 × 76,981.82
  4. Step 4: Simplify right side
    165,776.88x = 19,142,690,428.85
  5. Step 5: Solve for x
    x = 19,142,690,428.85/165,776.88
  6. Step 6: Final answer
    x = 115,472.62

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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.