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Finding the Fourth Proportional to 195,308.80, 292,905.60 and 76,940.80

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Solution

The fourth proportional to 195,308.80, 292,905.60 and 76,940.80 is: 115,388.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    195,308.80 : 292,905.60 = 76,940.80 : x
  2. Step 2: Convert to fraction form
    195,308.80/292,905.60 = 76,940.80/x
  3. Step 3: Cross multiply
    195,308.80x = 292,905.60 × 76,940.80
  4. Step 4: Simplify right side
    195,308.80x = 22,536,391,188.48
  5. Step 5: Solve for x
    x = 22,536,391,188.48/195,308.80
  6. Step 6: Final answer
    x = 115,388.51

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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.