Home / 208,501.20-312,633.29-82,072.91

Finding the Fourth Proportional to 208,501.20, 312,633.29 and 82,072.91

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Solution

The fourth proportional to 208,501.20, 312,633.29 and 82,072.91 is: 123,062.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,501.20 : 312,633.29 = 82,072.91 : x
  2. Step 2: Convert to fraction form
    208,501.20/312,633.29 = 82,072.91/x
  3. Step 3: Cross multiply
    208,501.20x = 312,633.29 × 82,072.91
  4. Step 4: Simplify right side
    208,501.20x = 25,658,721,899.64
  5. Step 5: Solve for x
    x = 25,658,721,899.64/208,501.20
  6. Step 6: Final answer
    x = 123,062.71

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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.