Home / 120,729.86-180,983.92-41,788.88

Finding the Fourth Proportional to 120,729.86, 180,983.92 and 41,788.88

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Solution

The fourth proportional to 120,729.86, 180,983.92 and 41,788.88 is: 62,644.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,729.86 : 180,983.92 = 41,788.88 : x
  2. Step 2: Convert to fraction form
    120,729.86/180,983.92 = 41,788.88/x
  3. Step 3: Cross multiply
    120,729.86x = 180,983.92 × 41,788.88
  4. Step 4: Simplify right side
    120,729.86x = 7,563,115,314.81
  5. Step 5: Solve for x
    x = 7,563,115,314.81/120,729.86
  6. Step 6: Final answer
    x = 62,644.94

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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.