Home / 120,998.72-181,517.44-42,135.36

Finding the Fourth Proportional to 120,998.72, 181,517.44 and 42,135.36

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Solution

The fourth proportional to 120,998.72, 181,517.44 and 42,135.36 is: 63,209.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,998.72 : 181,517.44 = 42,135.36 : x
  2. Step 2: Convert to fraction form
    120,998.72/181,517.44 = 42,135.36/x
  3. Step 3: Cross multiply
    120,998.72x = 181,517.44 × 42,135.36
  4. Step 4: Simplify right side
    120,998.72x = 7,648,302,680.68
  5. Step 5: Solve for x
    x = 7,648,302,680.68/120,998.72
  6. Step 6: Final answer
    x = 63,209.78

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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.