Home / 120,724.82-181,088.13-45,824.78

Finding the Fourth Proportional to 120,724.82, 181,088.13 and 45,824.78

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Solution

The fourth proportional to 120,724.82, 181,088.13 and 45,824.78 is: 68,737.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,724.82 : 181,088.13 = 45,824.78 : x
  2. Step 2: Convert to fraction form
    120,724.82/181,088.13 = 45,824.78/x
  3. Step 3: Cross multiply
    120,724.82x = 181,088.13 × 45,824.78
  4. Step 4: Simplify right side
    120,724.82x = 8,298,322,812.42
  5. Step 5: Solve for x
    x = 8,298,322,812.42/120,724.82
  6. Step 6: Final answer
    x = 68,737.51

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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.