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Finding the Fourth Proportional to 100,375.60, 150,390.60 and 84,823.60

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Solution

The fourth proportional to 100,375.60, 150,390.60 and 84,823.60 is: 127,089.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,375.60 : 150,390.60 = 84,823.60 : x
  2. Step 2: Convert to fraction form
    100,375.60/150,390.60 = 84,823.60/x
  3. Step 3: Cross multiply
    100,375.60x = 150,390.60 × 84,823.60
  4. Step 4: Simplify right side
    100,375.60x = 12,756,672,098.16
  5. Step 5: Solve for x
    x = 12,756,672,098.16/100,375.60
  6. Step 6: Final answer
    x = 127,089.37

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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.