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Finding the Fourth Proportional to 120,507.69, 180,725.04 and 36,245.47

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Solution

The fourth proportional to 120,507.69, 180,725.04 and 36,245.47 is: 54,357.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,507.69 : 180,725.04 = 36,245.47 : x
  2. Step 2: Convert to fraction form
    120,507.69/180,725.04 = 36,245.47/x
  3. Step 3: Cross multiply
    120,507.69x = 180,725.04 × 36,245.47
  4. Step 4: Simplify right side
    120,507.69x = 6,550,464,015.57
  5. Step 5: Solve for x
    x = 6,550,464,015.57/120,507.69
  6. Step 6: Final answer
    x = 54,357.23

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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.