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Finding the Fourth Proportional to 120,568.40, 180,852.60 and 115,449.20

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Solution

The fourth proportional to 120,568.40, 180,852.60 and 115,449.20 is: 173,173.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,568.40 : 180,852.60 = 115,449.20 : x
  2. Step 2: Convert to fraction form
    120,568.40/180,852.60 = 115,449.20/x
  3. Step 3: Cross multiply
    120,568.40x = 180,852.60 × 115,449.20
  4. Step 4: Simplify right side
    120,568.40x = 20,879,287,987.92
  5. Step 5: Solve for x
    x = 20,879,287,987.92/120,568.40
  6. Step 6: Final answer
    x = 173,173.80

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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.