Home / 120,021.76-180,081.05-53,416.33

Finding the Fourth Proportional to 120,021.76, 180,081.05 and 53,416.33

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Solution

The fourth proportional to 120,021.76, 180,081.05 and 53,416.33 is: 80,146.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,021.76 : 180,081.05 = 53,416.33 : x
  2. Step 2: Convert to fraction form
    120,021.76/180,081.05 = 53,416.33/x
  3. Step 3: Cross multiply
    120,021.76x = 180,081.05 × 53,416.33
  4. Step 4: Simplify right side
    120,021.76x = 9,619,268,076.26
  5. Step 5: Solve for x
    x = 9,619,268,076.26/120,021.76
  6. Step 6: Final answer
    x = 80,146.04

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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.