Home / 120,556.20-180,727.80-45,624.36

Finding the Fourth Proportional to 120,556.20, 180,727.80 and 45,624.36

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Solution

The fourth proportional to 120,556.20, 180,727.80 and 45,624.36 is: 68,396.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,556.20 : 180,727.80 = 45,624.36 : x
  2. Step 2: Convert to fraction form
    120,556.20/180,727.80 = 45,624.36/x
  3. Step 3: Cross multiply
    120,556.20x = 180,727.80 × 45,624.36
  4. Step 4: Simplify right side
    120,556.20x = 8,245,590,209.21
  5. Step 5: Solve for x
    x = 8,245,590,209.21/120,556.20
  6. Step 6: Final answer
    x = 68,396.24

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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.