Home / 120,353.82-180,592.20-80,400.12

Finding the Fourth Proportional to 120,353.82, 180,592.20 and 80,400.12

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Solution

The fourth proportional to 120,353.82, 180,592.20 and 80,400.12 is: 120,641.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,353.82 : 180,592.20 = 80,400.12 : x
  2. Step 2: Convert to fraction form
    120,353.82/180,592.20 = 80,400.12/x
  3. Step 3: Cross multiply
    120,353.82x = 180,592.20 × 80,400.12
  4. Step 4: Simplify right side
    120,353.82x = 14,519,634,551.06
  5. Step 5: Solve for x
    x = 14,519,634,551.06/120,353.82
  6. Step 6: Final answer
    x = 120,641.24

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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.