Home / 120,781.72-181,192.02-41,942.80

Finding the Fourth Proportional to 120,781.72, 181,192.02 and 41,942.80

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Solution

The fourth proportional to 120,781.72, 181,192.02 and 41,942.80 is: 62,920.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,781.72 : 181,192.02 = 41,942.80 : x
  2. Step 2: Convert to fraction form
    120,781.72/181,192.02 = 41,942.80/x
  3. Step 3: Cross multiply
    120,781.72x = 181,192.02 × 41,942.80
  4. Step 4: Simplify right side
    120,781.72x = 7,599,700,656.46
  5. Step 5: Solve for x
    x = 7,599,700,656.46/120,781.72
  6. Step 6: Final answer
    x = 62,920.95

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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.