Home / 165,909.30-248,687.91-81,550.50

Finding the Fourth Proportional to 165,909.30, 248,687.91 and 81,550.50

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Solution

The fourth proportional to 165,909.30, 248,687.91 and 81,550.50 is: 122,239.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,909.30 : 248,687.91 = 81,550.50 : x
  2. Step 2: Convert to fraction form
    165,909.30/248,687.91 = 81,550.50/x
  3. Step 3: Cross multiply
    165,909.30x = 248,687.91 × 81,550.50
  4. Step 4: Simplify right side
    165,909.30x = 20,280,623,404.46
  5. Step 5: Solve for x
    x = 20,280,623,404.46/165,909.30
  6. Step 6: Final answer
    x = 122,239.22

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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.