Home / 120,478.40-166,261.17-66,764.30

Finding the Fourth Proportional to 120,478.40, 166,261.17 and 66,764.30

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Solution

The fourth proportional to 120,478.40, 166,261.17 and 66,764.30 is: 92,135.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,478.40 : 166,261.17 = 66,764.30 : x
  2. Step 2: Convert to fraction form
    120,478.40/166,261.17 = 66,764.30/x
  3. Step 3: Cross multiply
    120,478.40x = 166,261.17 × 66,764.30
  4. Step 4: Simplify right side
    120,478.40x = 11,100,310,298.41
  5. Step 5: Solve for x
    x = 11,100,310,298.41/120,478.40
  6. Step 6: Final answer
    x = 92,135.28

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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.