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Finding the Fourth Proportional to 165,765.86, 248,648.58 and 76,970.82

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Solution

The fourth proportional to 165,765.86, 248,648.58 and 76,970.82 is: 115,456.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,765.86 : 248,648.58 = 76,970.82 : x
  2. Step 2: Convert to fraction form
    165,765.86/248,648.58 = 76,970.82/x
  3. Step 3: Cross multiply
    165,765.86x = 248,648.58 × 76,970.82
  4. Step 4: Simplify right side
    165,765.86x = 19,138,685,094.44
  5. Step 5: Solve for x
    x = 19,138,685,094.44/165,765.86
  6. Step 6: Final answer
    x = 115,456.14

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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.