Home / 120,820.32-181,161.03-49,791.99

Finding the Fourth Proportional to 120,820.32, 181,161.03 and 49,791.99

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Solution

The fourth proportional to 120,820.32, 181,161.03 and 49,791.99 is: 74,659.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,820.32 : 181,161.03 = 49,791.99 : x
  2. Step 2: Convert to fraction form
    120,820.32/181,161.03 = 49,791.99/x
  3. Step 3: Cross multiply
    120,820.32x = 181,161.03 × 49,791.99
  4. Step 4: Simplify right side
    120,820.32x = 9,020,369,060.22
  5. Step 5: Solve for x
    x = 9,020,369,060.22/120,820.32
  6. Step 6: Final answer
    x = 74,659.37

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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.