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Finding the Fourth Proportional to 99,227.70, 148,477.05 and 72,983.70

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Solution

The fourth proportional to 99,227.70, 148,477.05 and 72,983.70 is: 109,207.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,227.70 : 148,477.05 = 72,983.70 : x
  2. Step 2: Convert to fraction form
    99,227.70/148,477.05 = 72,983.70/x
  3. Step 3: Cross multiply
    99,227.70x = 148,477.05 × 72,983.70
  4. Step 4: Simplify right side
    99,227.70x = 10,836,404,474.09
  5. Step 5: Solve for x
    x = 10,836,404,474.09/99,227.70
  6. Step 6: Final answer
    x = 109,207.45

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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.