Home / 120,131.20-165,783.36-74,200.96

Finding the Fourth Proportional to 120,131.20, 165,783.36 and 74,200.96

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Solution

The fourth proportional to 120,131.20, 165,783.36 and 74,200.96 is: 102,398.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,131.20 : 165,783.36 = 74,200.96 : x
  2. Step 2: Convert to fraction form
    120,131.20/165,783.36 = 74,200.96/x
  3. Step 3: Cross multiply
    120,131.20x = 165,783.36 × 74,200.96
  4. Step 4: Simplify right side
    120,131.20x = 12,301,284,464.03
  5. Step 5: Solve for x
    x = 12,301,284,464.03/120,131.20
  6. Step 6: Final answer
    x = 102,398.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.