Home / 120,729.12-180,982.80-41,788.14

Finding the Fourth Proportional to 120,729.12, 180,982.80 and 41,788.14

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Solution

The fourth proportional to 120,729.12, 180,982.80 and 41,788.14 is: 62,643.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,729.12 : 180,982.80 = 41,788.14 : x
  2. Step 2: Convert to fraction form
    120,729.12/180,982.80 = 41,788.14/x
  3. Step 3: Cross multiply
    120,729.12x = 180,982.80 × 41,788.14
  4. Step 4: Simplify right side
    120,729.12x = 7,562,934,583.99
  5. Step 5: Solve for x
    x = 7,562,934,583.99/120,729.12
  6. Step 6: Final answer
    x = 62,643.83

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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.