Home / 120,615.12-166,449.87-66,903.62

Finding the Fourth Proportional to 120,615.12, 166,449.87 and 66,903.62

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Solution

The fourth proportional to 120,615.12, 166,449.87 and 66,903.62 is: 92,327.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,615.12 : 166,449.87 = 66,903.62 : x
  2. Step 2: Convert to fraction form
    120,615.12/166,449.87 = 66,903.62/x
  3. Step 3: Cross multiply
    120,615.12x = 166,449.87 × 66,903.62
  4. Step 4: Simplify right side
    120,615.12x = 11,136,098,019.28
  5. Step 5: Solve for x
    x = 11,136,098,019.28/120,615.12
  6. Step 6: Final answer
    x = 92,327.55

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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.