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Finding the Fourth Proportional to 100,379.76, 150,756.84 and 88,376.17

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Solution

The fourth proportional to 100,379.76, 150,756.84 and 88,376.17 is: 132,729.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,379.76 : 150,756.84 = 88,376.17 : x
  2. Step 2: Convert to fraction form
    100,379.76/150,756.84 = 88,376.17/x
  3. Step 3: Cross multiply
    100,379.76x = 150,756.84 × 88,376.17
  4. Step 4: Simplify right side
    100,379.76x = 13,323,311,366.72
  5. Step 5: Solve for x
    x = 13,323,311,366.72/100,379.76
  6. Step 6: Final answer
    x = 132,729.07

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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.