Home / 211,776.82-317,419.04-78,572.12

Finding the Fourth Proportional to 211,776.82, 317,419.04 and 78,572.12

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Solution

The fourth proportional to 211,776.82, 317,419.04 and 78,572.12 is: 117,766.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,776.82 : 317,419.04 = 78,572.12 : x
  2. Step 2: Convert to fraction form
    211,776.82/317,419.04 = 78,572.12/x
  3. Step 3: Cross multiply
    211,776.82x = 317,419.04 × 78,572.12
  4. Step 4: Simplify right side
    211,776.82x = 24,940,286,901.16
  5. Step 5: Solve for x
    x = 24,940,286,901.16/211,776.82
  6. Step 6: Final answer
    x = 117,766.84

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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.