Home / 120,478.41-166,261.19-66,764.32

Finding the Fourth Proportional to 120,478.41, 166,261.19 and 66,764.32

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Solution

The fourth proportional to 120,478.41, 166,261.19 and 66,764.32 is: 92,135.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,478.41 : 166,261.19 = 66,764.32 : x
  2. Step 2: Convert to fraction form
    120,478.41/166,261.19 = 66,764.32/x
  3. Step 3: Cross multiply
    120,478.41x = 166,261.19 × 66,764.32
  4. Step 4: Simplify right side
    120,478.41x = 11,100,315,292.74
  5. Step 5: Solve for x
    x = 11,100,315,292.74/120,478.41
  6. Step 6: Final answer
    x = 92,135.31

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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.