Home / 120,401.86-180,445.78-67,091.60

Finding the Fourth Proportional to 120,401.86, 180,445.78 and 67,091.60

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Solution

The fourth proportional to 120,401.86, 180,445.78 and 67,091.60 is: 100,549.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,401.86 : 180,445.78 = 67,091.60 : x
  2. Step 2: Convert to fraction form
    120,401.86/180,445.78 = 67,091.60/x
  3. Step 3: Cross multiply
    120,401.86x = 180,445.78 × 67,091.60
  4. Step 4: Simplify right side
    120,401.86x = 12,106,396,093.45
  5. Step 5: Solve for x
    x = 12,106,396,093.45/120,401.86
  6. Step 6: Final answer
    x = 100,549.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.