Home / 120,372.12-166,119.48-66,663

Finding the Fourth Proportional to 120,372.12, 166,119.48 and 66,663

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Solution

The fourth proportional to 120,372.12, 166,119.48 and 66,663 is: 91,998.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,372.12 : 166,119.48 = 66,663 : x
  2. Step 2: Convert to fraction form
    120,372.12/166,119.48 = 66,663/x
  3. Step 3: Cross multiply
    120,372.12x = 166,119.48 × 66,663
  4. Step 4: Simplify right side
    120,372.12x = 11,074,022,895.24
  5. Step 5: Solve for x
    x = 11,074,022,895.24/120,372.12
  6. Step 6: Final answer
    x = 91,998.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.