Home / 120,432.12-166,205.70-66,722.10

Finding the Fourth Proportional to 120,432.12, 166,205.70 and 66,722.10

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Solution

The fourth proportional to 120,432.12, 166,205.70 and 66,722.10 is: 92,081.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,432.12 : 166,205.70 = 66,722.10 : x
  2. Step 2: Convert to fraction form
    120,432.12/166,205.70 = 66,722.10/x
  3. Step 3: Cross multiply
    120,432.12x = 166,205.70 × 66,722.10
  4. Step 4: Simplify right side
    120,432.12x = 11,089,593,335.97
  5. Step 5: Solve for x
    x = 11,089,593,335.97/120,432.12
  6. Step 6: Final answer
    x = 92,081.69

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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.