Home / 139,942.24-209,924.66-43,872.88

Finding the Fourth Proportional to 139,942.24, 209,924.66 and 43,872.88

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Solution

The fourth proportional to 139,942.24, 209,924.66 and 43,872.88 is: 65,812.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,942.24 : 209,924.66 = 43,872.88 : x
  2. Step 2: Convert to fraction form
    139,942.24/209,924.66 = 43,872.88/x
  3. Step 3: Cross multiply
    139,942.24x = 209,924.66 × 43,872.88
  4. Step 4: Simplify right side
    139,942.24x = 9,209,999,417.22
  5. Step 5: Solve for x
    x = 9,209,999,417.22/139,942.24
  6. Step 6: Final answer
    x = 65,812.86

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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.