Home / 120,938.19-181,345.08-54,321.15

Finding the Fourth Proportional to 120,938.19, 181,345.08 and 54,321.15

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Solution

The fourth proportional to 120,938.19, 181,345.08 and 54,321.15 is: 81,453.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,938.19 : 181,345.08 = 54,321.15 : x
  2. Step 2: Convert to fraction form
    120,938.19/181,345.08 = 54,321.15/x
  3. Step 3: Cross multiply
    120,938.19x = 181,345.08 × 54,321.15
  4. Step 4: Simplify right side
    120,938.19x = 9,850,873,292.44
  5. Step 5: Solve for x
    x = 9,850,873,292.44/120,938.19
  6. Step 6: Final answer
    x = 81,453.78

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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.