Home / 211,755.16-317,756.69-78,727.24

Finding the Fourth Proportional to 211,755.16, 317,756.69 and 78,727.24

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Solution

The fourth proportional to 211,755.16, 317,756.69 and 78,727.24 is: 118,136.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,755.16 : 317,756.69 = 78,727.24 : x
  2. Step 2: Convert to fraction form
    211,755.16/317,756.69 = 78,727.24/x
  3. Step 3: Cross multiply
    211,755.16x = 317,756.69 × 78,727.24
  4. Step 4: Simplify right side
    211,755.16x = 25,016,107,195.24
  5. Step 5: Solve for x
    x = 25,016,107,195.24/211,755.16
  6. Step 6: Final answer
    x = 118,136.94

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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.