Home / 211,634.92-317,442.12-78,541.12

Finding the Fourth Proportional to 211,634.92, 317,442.12 and 78,541.12

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Solution

The fourth proportional to 211,634.92, 317,442.12 and 78,541.12 is: 117,807.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,634.92 : 317,442.12 = 78,541.12 : x
  2. Step 2: Convert to fraction form
    211,634.92/317,442.12 = 78,541.12/x
  3. Step 3: Cross multiply
    211,634.92x = 317,442.12 × 78,541.12
  4. Step 4: Simplify right side
    211,634.92x = 24,932,259,639.97
  5. Step 5: Solve for x
    x = 24,932,259,639.97/211,634.92
  6. Step 6: Final answer
    x = 117,807.87

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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.