Home / 121,767.52-182,688.20-86,297.42

Finding the Fourth Proportional to 121,767.52, 182,688.20 and 86,297.42

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Solution

The fourth proportional to 121,767.52, 182,688.20 and 86,297.42 is: 129,472.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,767.52 : 182,688.20 = 86,297.42 : x
  2. Step 2: Convert to fraction form
    121,767.52/182,688.20 = 86,297.42/x
  3. Step 3: Cross multiply
    121,767.52x = 182,688.20 × 86,297.42
  4. Step 4: Simplify right side
    121,767.52x = 15,765,520,324.44
  5. Step 5: Solve for x
    x = 15,765,520,324.44/121,767.52
  6. Step 6: Final answer
    x = 129,472.30

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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.