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Finding the Fourth Proportional to 268,776.21, 402,806.01 and 100,126.72

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Solution

The fourth proportional to 268,776.21, 402,806.01 and 100,126.72 is: 150,056.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,776.21 : 402,806.01 = 100,126.72 : x
  2. Step 2: Convert to fraction form
    268,776.21/402,806.01 = 100,126.72/x
  3. Step 3: Cross multiply
    268,776.21x = 402,806.01 × 100,126.72
  4. Step 4: Simplify right side
    268,776.21x = 40,331,645,456.57
  5. Step 5: Solve for x
    x = 40,331,645,456.57/268,776.21
  6. Step 6: Final answer
    x = 150,056.60

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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.