Home / 120,131.60-180,287.16-45,325.52

Finding the Fourth Proportional to 120,131.60, 180,287.16 and 45,325.52

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Solution

The fourth proportional to 120,131.60, 180,287.16 and 45,325.52 is: 68,022.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,131.60 : 180,287.16 = 45,325.52 : x
  2. Step 2: Convert to fraction form
    120,131.60/180,287.16 = 45,325.52/x
  3. Step 3: Cross multiply
    120,131.60x = 180,287.16 × 45,325.52
  4. Step 4: Simplify right side
    120,131.60x = 8,171,609,276.32
  5. Step 5: Solve for x
    x = 8,171,609,276.32/120,131.60
  6. Step 6: Final answer
    x = 68,022.15

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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.