Home / 165,021.31-247,492.32-76,189.51

Finding the Fourth Proportional to 165,021.31, 247,492.32 and 76,189.51

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Solution

The fourth proportional to 165,021.31, 247,492.32 and 76,189.51 is: 114,265.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,021.31 : 247,492.32 = 76,189.51 : x
  2. Step 2: Convert to fraction form
    165,021.31/247,492.32 = 76,189.51/x
  3. Step 3: Cross multiply
    165,021.31x = 247,492.32 × 76,189.51
  4. Step 4: Simplify right side
    165,021.31x = 18,856,318,589.56
  5. Step 5: Solve for x
    x = 18,856,318,589.56/165,021.31
  6. Step 6: Final answer
    x = 114,265.96

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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.