Home / 205,743.63-308,629.12-79,385.46

Finding the Fourth Proportional to 205,743.63, 308,629.12 and 79,385.46

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Solution

The fourth proportional to 205,743.63, 308,629.12 and 79,385.46 is: 119,083.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,743.63 : 308,629.12 = 79,385.46 : x
  2. Step 2: Convert to fraction form
    205,743.63/308,629.12 = 79,385.46/x
  3. Step 3: Cross multiply
    205,743.63x = 308,629.12 × 79,385.46
  4. Step 4: Simplify right side
    205,743.63x = 24,500,664,660.60
  5. Step 5: Solve for x
    x = 24,500,664,660.60/205,743.63
  6. Step 6: Final answer
    x = 119,083.47

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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.