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Finding the Fourth Proportional to 210,081.84, 315,163.73 and 67,962.34

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Solution

The fourth proportional to 210,081.84, 315,163.73 and 67,962.34 is: 101,956.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,081.84 : 315,163.73 = 67,962.34 : x
  2. Step 2: Convert to fraction form
    210,081.84/315,163.73 = 67,962.34/x
  3. Step 3: Cross multiply
    210,081.84x = 315,163.73 × 67,962.34
  4. Step 4: Simplify right side
    210,081.84x = 21,419,264,573.93
  5. Step 5: Solve for x
    x = 21,419,264,573.93/210,081.84
  6. Step 6: Final answer
    x = 101,956.76

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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.