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Finding the Fourth Proportional to 165,017.52, 247,486.60 and 76,185.68

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Solution

The fourth proportional to 165,017.52, 247,486.60 and 76,185.68 is: 114,260.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,017.52 : 247,486.60 = 76,185.68 : x
  2. Step 2: Convert to fraction form
    165,017.52/247,486.60 = 76,185.68/x
  3. Step 3: Cross multiply
    165,017.52x = 247,486.60 × 76,185.68
  4. Step 4: Simplify right side
    165,017.52x = 18,854,934,911.89
  5. Step 5: Solve for x
    x = 18,854,934,911.89/165,017.52
  6. Step 6: Final answer
    x = 114,260.20

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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.