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Finding the Fourth Proportional to 133,245.44, 183,878.27 and 72,816.44

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Solution

The fourth proportional to 133,245.44, 183,878.27 and 72,816.44 is: 100,486.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,245.44 : 183,878.27 = 72,816.44 : x
  2. Step 2: Convert to fraction form
    133,245.44/183,878.27 = 72,816.44/x
  3. Step 3: Cross multiply
    133,245.44x = 183,878.27 × 72,816.44
  4. Step 4: Simplify right side
    133,245.44x = 13,389,360,004.35
  5. Step 5: Solve for x
    x = 13,389,360,004.35/133,245.44
  6. Step 6: Final answer
    x = 100,486.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.