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Finding the Fourth Proportional to 181,611.72, 272,492.64 and 80,356.68

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Solution

The fourth proportional to 181,611.72, 272,492.64 and 80,356.68 is: 120,568.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,611.72 : 272,492.64 = 80,356.68 : x
  2. Step 2: Convert to fraction form
    181,611.72/272,492.64 = 80,356.68/x
  3. Step 3: Cross multiply
    181,611.72x = 272,492.64 × 80,356.68
  4. Step 4: Simplify right side
    181,611.72x = 21,896,603,874.84
  5. Step 5: Solve for x
    x = 21,896,603,874.84/181,611.72
  6. Step 6: Final answer
    x = 120,568.23

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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.