Home / 120,135.12-180,213.42-60,954.90

Finding the Fourth Proportional to 120,135.12, 180,213.42 and 60,954.90

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Solution

The fourth proportional to 120,135.12, 180,213.42 and 60,954.90 is: 91,437.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,135.12 : 180,213.42 = 60,954.90 : x
  2. Step 2: Convert to fraction form
    120,135.12/180,213.42 = 60,954.90/x
  3. Step 3: Cross multiply
    120,135.12x = 180,213.42 × 60,954.90
  4. Step 4: Simplify right side
    120,135.12x = 10,984,890,994.76
  5. Step 5: Solve for x
    x = 10,984,890,994.76/120,135.12
  6. Step 6: Final answer
    x = 91,437.80

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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.