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Finding the Fourth Proportional to 183,963.92, 275,715.14 and 78,659.28

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Solution

The fourth proportional to 183,963.92, 275,715.14 and 78,659.28 is: 117,890.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,963.92 : 275,715.14 = 78,659.28 : x
  2. Step 2: Convert to fraction form
    183,963.92/275,715.14 = 78,659.28/x
  3. Step 3: Cross multiply
    183,963.92x = 275,715.14 × 78,659.28
  4. Step 4: Simplify right side
    183,963.92x = 21,687,554,397.50
  5. Step 5: Solve for x
    x = 21,687,554,397.50/183,963.92
  6. Step 6: Final answer
    x = 117,890.26

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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.