Home / 205,832.40-308,617.20-87,442.80

Finding the Fourth Proportional to 205,832.40, 308,617.20 and 87,442.80

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Solution

The fourth proportional to 205,832.40, 308,617.20 and 87,442.80 is: 131,108.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,832.40 : 308,617.20 = 87,442.80 : x
  2. Step 2: Convert to fraction form
    205,832.40/308,617.20 = 87,442.80/x
  3. Step 3: Cross multiply
    205,832.40x = 308,617.20 × 87,442.80
  4. Step 4: Simplify right side
    205,832.40x = 26,986,352,096.16
  5. Step 5: Solve for x
    x = 26,986,352,096.16/205,832.40
  6. Step 6: Final answer
    x = 131,108.38

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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.