Home / 205,001.30-307,631.55-120,761.30

Finding the Fourth Proportional to 205,001.30, 307,631.55 and 120,761.30

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Solution

The fourth proportional to 205,001.30, 307,631.55 and 120,761.30 is: 181,218.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,001.30 : 307,631.55 = 120,761.30 : x
  2. Step 2: Convert to fraction form
    205,001.30/307,631.55 = 120,761.30/x
  3. Step 3: Cross multiply
    205,001.30x = 307,631.55 × 120,761.30
  4. Step 4: Simplify right side
    205,001.30x = 37,149,985,899.02
  5. Step 5: Solve for x
    x = 37,149,985,899.02/205,001.30
  6. Step 6: Final answer
    x = 181,218.29

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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.