Home / 131,613.88-197,420.82-76,179.64

Finding the Fourth Proportional to 131,613.88, 197,420.82 and 76,179.64

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Solution

The fourth proportional to 131,613.88, 197,420.82 and 76,179.64 is: 114,269.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,613.88 : 197,420.82 = 76,179.64 : x
  2. Step 2: Convert to fraction form
    131,613.88/197,420.82 = 76,179.64/x
  3. Step 3: Cross multiply
    131,613.88x = 197,420.82 × 76,179.64
  4. Step 4: Simplify right side
    131,613.88x = 15,039,446,996.10
  5. Step 5: Solve for x
    x = 15,039,446,996.10/131,613.88
  6. Step 6: Final answer
    x = 114,269.46

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1.5x scale

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.