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Finding the Fourth Proportional to 181,940.60, 272,813.70 and 76,640.60

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Solution

The fourth proportional to 181,940.60, 272,813.70 and 76,640.60 is: 114,919.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,940.60 : 272,813.70 = 76,640.60 : x
  2. Step 2: Convert to fraction form
    181,940.60/272,813.70 = 76,640.60/x
  3. Step 3: Cross multiply
    181,940.60x = 272,813.70 × 76,640.60
  4. Step 4: Simplify right side
    181,940.60x = 20,908,605,656.22
  5. Step 5: Solve for x
    x = 20,908,605,656.22/181,940.60
  6. Step 6: Final answer
    x = 114,919.96

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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.