Home / 120,723.90-166,600.80-67,012.35

Finding the Fourth Proportional to 120,723.90, 166,600.80 and 67,012.35

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Solution

The fourth proportional to 120,723.90, 166,600.80 and 67,012.35 is: 92,478.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,723.90 : 166,600.80 = 67,012.35 : x
  2. Step 2: Convert to fraction form
    120,723.90/166,600.80 = 67,012.35/x
  3. Step 3: Cross multiply
    120,723.90x = 166,600.80 × 67,012.35
  4. Step 4: Simplify right side
    120,723.90x = 11,164,311,119.88
  5. Step 5: Solve for x
    x = 11,164,311,119.88/120,723.90
  6. Step 6: Final answer
    x = 92,478.05

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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.