Home / 205,834.40-308,620.20-87,444.80

Finding the Fourth Proportional to 205,834.40, 308,620.20 and 87,444.80

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Solution

The fourth proportional to 205,834.40, 308,620.20 and 87,444.80 is: 131,111.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,834.40 : 308,620.20 = 87,444.80 : x
  2. Step 2: Convert to fraction form
    205,834.40/308,620.20 = 87,444.80/x
  3. Step 3: Cross multiply
    205,834.40x = 308,620.20 × 87,444.80
  4. Step 4: Simplify right side
    205,834.40x = 26,987,231,664.96
  5. Step 5: Solve for x
    x = 26,987,231,664.96/205,834.40
  6. Step 6: Final answer
    x = 131,111.38

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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.