Home / 209,139.08-313,709.66-51,367.56

Finding the Fourth Proportional to 209,139.08, 313,709.66 and 51,367.56

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Solution

The fourth proportional to 209,139.08, 313,709.66 and 51,367.56 is: 77,051.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,139.08 : 313,709.66 = 51,367.56 : x
  2. Step 2: Convert to fraction form
    209,139.08/313,709.66 = 51,367.56/x
  3. Step 3: Cross multiply
    209,139.08x = 313,709.66 × 51,367.56
  4. Step 4: Simplify right side
    209,139.08x = 16,114,499,782.63
  5. Step 5: Solve for x
    x = 16,114,499,782.63/209,139.08
  6. Step 6: Final answer
    x = 77,051.60

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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.