Home / 211,767.66-317,456.55-91,749.20

Finding the Fourth Proportional to 211,767.66, 317,456.55 and 91,749.20

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Solution

The fourth proportional to 211,767.66, 317,456.55 and 91,749.20 is: 137,539.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,767.66 : 317,456.55 = 91,749.20 : x
  2. Step 2: Convert to fraction form
    211,767.66/317,456.55 = 91,749.20/x
  3. Step 3: Cross multiply
    211,767.66x = 317,456.55 × 91,749.20
  4. Step 4: Simplify right side
    211,767.66x = 29,126,382,909.98
  5. Step 5: Solve for x
    x = 29,126,382,909.98/211,767.66
  6. Step 6: Final answer
    x = 137,539.33

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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.