Home / 165,450.12-248,089.32-81,173.40

Finding the Fourth Proportional to 165,450.12, 248,089.32 and 81,173.40

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Solution

The fourth proportional to 165,450.12, 248,089.32 and 81,173.40 is: 121,717.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,450.12 : 248,089.32 = 81,173.40 : x
  2. Step 2: Convert to fraction form
    165,450.12/248,089.32 = 81,173.40/x
  3. Step 3: Cross multiply
    165,450.12x = 248,089.32 × 81,173.40
  4. Step 4: Simplify right side
    165,450.12x = 20,138,253,608.09
  5. Step 5: Solve for x
    x = 20,138,253,608.09/165,450.12
  6. Step 6: Final answer
    x = 121,717.98

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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.