Home / 209,101.11-288,560.91-113,607.78

Finding the Fourth Proportional to 209,101.11, 288,560.91 and 113,607.78

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Solution

The fourth proportional to 209,101.11, 288,560.91 and 113,607.78 is: 156,779.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,101.11 : 288,560.91 = 113,607.78 : x
  2. Step 2: Convert to fraction form
    209,101.11/288,560.91 = 113,607.78/x
  3. Step 3: Cross multiply
    209,101.11x = 288,560.91 × 113,607.78
  4. Step 4: Simplify right side
    209,101.11x = 32,782,764,379.88
  5. Step 5: Solve for x
    x = 32,782,764,379.88/209,101.11
  6. Step 6: Final answer
    x = 156,779.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.