Home / 205,826.80-308,740.20-72,857.20

Finding the Fourth Proportional to 205,826.80, 308,740.20 and 72,857.20

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Solution

The fourth proportional to 205,826.80, 308,740.20 and 72,857.20 is: 109,285.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,826.80 : 308,740.20 = 72,857.20 : x
  2. Step 2: Convert to fraction form
    205,826.80/308,740.20 = 72,857.20/x
  3. Step 3: Cross multiply
    205,826.80x = 308,740.20 × 72,857.20
  4. Step 4: Simplify right side
    205,826.80x = 22,493,946,499.44
  5. Step 5: Solve for x
    x = 22,493,946,499.44/205,826.80
  6. Step 6: Final answer
    x = 109,285.80

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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.