Home / 120,853.20-181,279.80-54,325.20

Finding the Fourth Proportional to 120,853.20, 181,279.80 and 54,325.20

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Solution

The fourth proportional to 120,853.20, 181,279.80 and 54,325.20 is: 81,487.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,853.20 : 181,279.80 = 54,325.20 : x
  2. Step 2: Convert to fraction form
    120,853.20/181,279.80 = 54,325.20/x
  3. Step 3: Cross multiply
    120,853.20x = 181,279.80 × 54,325.20
  4. Step 4: Simplify right side
    120,853.20x = 9,848,061,390.96
  5. Step 5: Solve for x
    x = 9,848,061,390.96/120,853.20
  6. Step 6: Final answer
    x = 81,487.80

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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.