Home / 211,388.16-317,131.04-71,143.36

Finding the Fourth Proportional to 211,388.16, 317,131.04 and 71,143.36

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Solution

The fourth proportional to 211,388.16, 317,131.04 and 71,143.36 is: 106,731.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,388.16 : 317,131.04 = 71,143.36 : x
  2. Step 2: Convert to fraction form
    211,388.16/317,131.04 = 71,143.36/x
  3. Step 3: Cross multiply
    211,388.16x = 317,131.04 × 71,143.36
  4. Step 4: Simplify right side
    211,388.16x = 22,561,767,745.89
  5. Step 5: Solve for x
    x = 22,561,767,745.89/211,388.16
  6. Step 6: Final answer
    x = 106,731.46

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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.