Home / 211,933.69-317,851.21-78,876.61

Finding the Fourth Proportional to 211,933.69, 317,851.21 and 78,876.61

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Solution

The fourth proportional to 211,933.69, 317,851.21 and 78,876.61 is: 118,296.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,933.69 : 317,851.21 = 78,876.61 : x
  2. Step 2: Convert to fraction form
    211,933.69/317,851.21 = 78,876.61/x
  3. Step 3: Cross multiply
    211,933.69x = 317,851.21 × 78,876.61
  4. Step 4: Simplify right side
    211,933.69x = 25,071,025,929.20
  5. Step 5: Solve for x
    x = 25,071,025,929.20/211,933.69
  6. Step 6: Final answer
    x = 118,296.56

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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.