Home / 120,161.58-180,398.19-80,434.72

Finding the Fourth Proportional to 120,161.58, 180,398.19 and 80,434.72

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Solution

The fourth proportional to 120,161.58, 180,398.19 and 80,434.72 is: 120,756.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,161.58 : 180,398.19 = 80,434.72 : x
  2. Step 2: Convert to fraction form
    120,161.58/180,398.19 = 80,434.72/x
  3. Step 3: Cross multiply
    120,161.58x = 180,398.19 × 80,434.72
  4. Step 4: Simplify right side
    120,161.58x = 14,510,277,975.84
  5. Step 5: Solve for x
    x = 14,510,277,975.84/120,161.58
  6. Step 6: Final answer
    x = 120,756.39

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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.