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Finding the Fourth Proportional to 120,643.44, 180,965.16 and 37,520.88

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Solution

The fourth proportional to 120,643.44, 180,965.16 and 37,520.88 is: 56,281.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,643.44 : 180,965.16 = 37,520.88 : x
  2. Step 2: Convert to fraction form
    120,643.44/180,965.16 = 37,520.88/x
  3. Step 3: Cross multiply
    120,643.44x = 180,965.16 × 37,520.88
  4. Step 4: Simplify right side
    120,643.44x = 6,789,972,052.54
  5. Step 5: Solve for x
    x = 6,789,972,052.54/120,643.44
  6. Step 6: Final answer
    x = 56,281.32

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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.