Home / 211,389.16-317,132.54-71,144.36

Finding the Fourth Proportional to 211,389.16, 317,132.54 and 71,144.36

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Solution

The fourth proportional to 211,389.16, 317,132.54 and 71,144.36 is: 106,732.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,389.16 : 317,132.54 = 71,144.36 : x
  2. Step 2: Convert to fraction form
    211,389.16/317,132.54 = 71,144.36/x
  3. Step 3: Cross multiply
    211,389.16x = 317,132.54 × 71,144.36
  4. Step 4: Simplify right side
    211,389.16x = 22,562,191,593.47
  5. Step 5: Solve for x
    x = 22,562,191,593.47/211,389.16
  6. Step 6: Final answer
    x = 106,732.96

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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.