Home / 211,659.18-317,406.03-76,691.19

Finding the Fourth Proportional to 211,659.18, 317,406.03 and 76,691.19

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Solution

The fourth proportional to 211,659.18, 317,406.03 and 76,691.19 is: 115,006.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,659.18 : 317,406.03 = 76,691.19 : x
  2. Step 2: Convert to fraction form
    211,659.18/317,406.03 = 76,691.19/x
  3. Step 3: Cross multiply
    211,659.18x = 317,406.03 × 76,691.19
  4. Step 4: Simplify right side
    211,659.18x = 24,342,246,153.88
  5. Step 5: Solve for x
    x = 24,342,246,153.88/211,659.18
  6. Step 6: Final answer
    x = 115,006.81

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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.