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Finding the Fourth Proportional to 140,660.79, 210,998.00 and 45,890.79

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Solution

The fourth proportional to 140,660.79, 210,998.00 and 45,890.79 is: 68,838.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,660.79 : 210,998.00 = 45,890.79 : x
  2. Step 2: Convert to fraction form
    140,660.79/210,998.00 = 45,890.79/x
  3. Step 3: Cross multiply
    140,660.79x = 210,998.00 × 45,890.79
  4. Step 4: Simplify right side
    140,660.79x = 9,682,864,678.97
  5. Step 5: Solve for x
    x = 9,682,864,678.97/140,660.79
  6. Step 6: Final answer
    x = 68,838.41

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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.