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Finding the Fourth Proportional to 120,887.44, 181,390.56 and 54,374.56

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Solution

The fourth proportional to 120,887.44, 181,390.56 and 54,374.56 is: 81,588.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,887.44 : 181,390.56 = 54,374.56 : x
  2. Step 2: Convert to fraction form
    120,887.44/181,390.56 = 54,374.56/x
  3. Step 3: Cross multiply
    120,887.44x = 181,390.56 × 54,374.56
  4. Step 4: Simplify right side
    120,887.44x = 9,863,031,888.15
  5. Step 5: Solve for x
    x = 9,863,031,888.15/120,887.44
  6. Step 6: Final answer
    x = 81,588.56

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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.