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Finding the Fourth Proportional to 120,260.40, 180,455.40 and 50,146.80

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Solution

The fourth proportional to 120,260.40, 180,455.40 and 50,146.80 is: 75,247.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,260.40 : 180,455.40 = 50,146.80 : x
  2. Step 2: Convert to fraction form
    120,260.40/180,455.40 = 50,146.80/x
  3. Step 3: Cross multiply
    120,260.40x = 180,455.40 × 50,146.80
  4. Step 4: Simplify right side
    120,260.40x = 9,049,260,852.72
  5. Step 5: Solve for x
    x = 9,049,260,852.72/120,260.40
  6. Step 6: Final answer
    x = 75,247.22

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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.