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Finding the Fourth Proportional to 120,287.55, 180,431.43 and 36,056.67

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Solution

The fourth proportional to 120,287.55, 180,431.43 and 36,056.67 is: 54,085.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,287.55 : 180,431.43 = 36,056.67 : x
  2. Step 2: Convert to fraction form
    120,287.55/180,431.43 = 36,056.67/x
  3. Step 3: Cross multiply
    120,287.55x = 180,431.43 × 36,056.67
  4. Step 4: Simplify right side
    120,287.55x = 6,505,756,529.14
  5. Step 5: Solve for x
    x = 6,505,756,529.14/120,287.55
  6. Step 6: Final answer
    x = 54,085.04

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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.