Home / 211,872.40-317,808.56-54,095.20

Finding the Fourth Proportional to 211,872.40, 317,808.56 and 54,095.20

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Solution

The fourth proportional to 211,872.40, 317,808.56 and 54,095.20 is: 81,142.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,872.40 : 317,808.56 = 54,095.20 : x
  2. Step 2: Convert to fraction form
    211,872.40/317,808.56 = 54,095.20/x
  3. Step 3: Cross multiply
    211,872.40x = 317,808.56 × 54,095.20
  4. Step 4: Simplify right side
    211,872.40x = 17,191,917,614.91
  5. Step 5: Solve for x
    x = 17,191,917,614.91/211,872.40
  6. Step 6: Final answer
    x = 81,142.79

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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.