Home / 139,836.45-209,566.96-76,561.08

Finding the Fourth Proportional to 139,836.45, 209,566.96 and 76,561.08

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Solution

The fourth proportional to 139,836.45, 209,566.96 and 76,561.08 is: 114,738.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,836.45 : 209,566.96 = 76,561.08 : x
  2. Step 2: Convert to fraction form
    139,836.45/209,566.96 = 76,561.08/x
  3. Step 3: Cross multiply
    139,836.45x = 209,566.96 × 76,561.08
  4. Step 4: Simplify right side
    139,836.45x = 16,044,672,789.92
  5. Step 5: Solve for x
    x = 16,044,672,789.92/139,836.45
  6. Step 6: Final answer
    x = 114,738.85

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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.