Home / 123,930.72-185,743.80-57,280.68

Finding the Fourth Proportional to 123,930.72, 185,743.80 and 57,280.68

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Solution

The fourth proportional to 123,930.72, 185,743.80 and 57,280.68 is: 85,850.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,930.72 : 185,743.80 = 57,280.68 : x
  2. Step 2: Convert to fraction form
    123,930.72/185,743.80 = 57,280.68/x
  3. Step 3: Cross multiply
    123,930.72x = 185,743.80 × 57,280.68
  4. Step 4: Simplify right side
    123,930.72x = 10,639,531,169.78
  5. Step 5: Solve for x
    x = 10,639,531,169.78/123,930.72
  6. Step 6: Final answer
    x = 85,850.64

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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.