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Finding the Fourth Proportional to 139,905.64, 209,747.58 and 73,333

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Solution

The fourth proportional to 139,905.64, 209,747.58 and 73,333 is: 109,941.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,905.64 : 209,747.58 = 73,333 : x
  2. Step 2: Convert to fraction form
    139,905.64/209,747.58 = 73,333/x
  3. Step 3: Cross multiply
    139,905.64x = 209,747.58 × 73,333
  4. Step 4: Simplify right side
    139,905.64x = 15,381,419,284.14
  5. Step 5: Solve for x
    x = 15,381,419,284.14/139,905.64
  6. Step 6: Final answer
    x = 109,941.38

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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.