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Finding the Fourth Proportional to 120,652.70, 180,955.28 and 40,682.88

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Solution

The fourth proportional to 120,652.70, 180,955.28 and 40,682.88 is: 61,016.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,652.70 : 180,955.28 = 40,682.88 : x
  2. Step 2: Convert to fraction form
    120,652.70/180,955.28 = 40,682.88/x
  3. Step 3: Cross multiply
    120,652.70x = 180,955.28 × 40,682.88
  4. Step 4: Simplify right side
    120,652.70x = 7,361,782,043.31
  5. Step 5: Solve for x
    x = 7,361,782,043.31/120,652.70
  6. Step 6: Final answer
    x = 61,016.31

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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.