Home / 120,480.15-166,263.59-66,766.05

Finding the Fourth Proportional to 120,480.15, 166,263.59 and 66,766.05

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Solution

The fourth proportional to 120,480.15, 166,263.59 and 66,766.05 is: 92,137.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,480.15 : 166,263.59 = 66,766.05 : x
  2. Step 2: Convert to fraction form
    120,480.15/166,263.59 = 66,766.05/x
  3. Step 3: Cross multiply
    120,480.15x = 166,263.59 × 66,766.05
  4. Step 4: Simplify right side
    120,480.15x = 11,100,762,829.29
  5. Step 5: Solve for x
    x = 11,100,762,829.29/120,480.15
  6. Step 6: Final answer
    x = 92,137.69

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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.