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Finding the Fourth Proportional to 139,881.70, 209,884.57 and 73,306.00

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Solution

The fourth proportional to 139,881.70, 209,884.57 and 73,306.00 is: 109,991.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,881.70 : 209,884.57 = 73,306.00 : x
  2. Step 2: Convert to fraction form
    139,881.70/209,884.57 = 73,306.00/x
  3. Step 3: Cross multiply
    139,881.70x = 209,884.57 × 73,306.00
  4. Step 4: Simplify right side
    139,881.70x = 15,385,796,872.47
  5. Step 5: Solve for x
    x = 15,385,796,872.47/139,881.70
  6. Step 6: Final answer
    x = 109,991.50

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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.