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Finding the Fourth Proportional to 105,934, 158,901 and 39,390.88

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Solution

The fourth proportional to 105,934, 158,901 and 39,390.88 is: 59,086.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,934 : 158,901 = 39,390.88 : x
  2. Step 2: Convert to fraction form
    105,934/158,901 = 39,390.88/x
  3. Step 3: Cross multiply
    105,934x = 158,901 × 39,390.88
  4. Step 4: Simplify right side
    105,934x = 6,259,250,222.88
  5. Step 5: Solve for x
    x = 6,259,250,222.88/105,934
  6. Step 6: Final answer
    x = 59,086.32

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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.