Home / 120,374.24-166,116.32-66,659.24

Finding the Fourth Proportional to 120,374.24, 166,116.32 and 66,659.24

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Solution

The fourth proportional to 120,374.24, 166,116.32 and 66,659.24 is: 91,989.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,374.24 : 166,116.32 = 66,659.24 : x
  2. Step 2: Convert to fraction form
    120,374.24/166,116.32 = 66,659.24/x
  3. Step 3: Cross multiply
    120,374.24x = 166,116.32 × 66,659.24
  4. Step 4: Simplify right side
    120,374.24x = 11,073,187,642.80
  5. Step 5: Solve for x
    x = 11,073,187,642.80/120,374.24
  6. Step 6: Final answer
    x = 91,989.68

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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.