Home / 204,784.20-282,776.76-128,431.80

Finding the Fourth Proportional to 204,784.20, 282,776.76 and 128,431.80

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Solution

The fourth proportional to 204,784.20, 282,776.76 and 128,431.80 is: 177,345.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,784.20 : 282,776.76 = 128,431.80 : x
  2. Step 2: Convert to fraction form
    204,784.20/282,776.76 = 128,431.80/x
  3. Step 3: Cross multiply
    204,784.20x = 282,776.76 × 128,431.80
  4. Step 4: Simplify right side
    204,784.20x = 36,317,528,284.97
  5. Step 5: Solve for x
    x = 36,317,528,284.97/204,784.20
  6. Step 6: Final answer
    x = 177,345.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.