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Finding the Fourth Proportional to 120,987.33, 181,323.32 and 61,773.09

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Solution

The fourth proportional to 120,987.33, 181,323.32 and 61,773.09 is: 92,579.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,987.33 : 181,323.32 = 61,773.09 : x
  2. Step 2: Convert to fraction form
    120,987.33/181,323.32 = 61,773.09/x
  3. Step 3: Cross multiply
    120,987.33x = 181,323.32 × 61,773.09
  4. Step 4: Simplify right side
    120,987.33x = 11,200,901,456.59
  5. Step 5: Solve for x
    x = 11,200,901,456.59/120,987.33
  6. Step 6: Final answer
    x = 92,579.13

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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.