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Finding the Fourth Proportional to 101,408.40, 152,112.60 and 100,825.20

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Solution

The fourth proportional to 101,408.40, 152,112.60 and 100,825.20 is: 151,237.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,408.40 : 152,112.60 = 100,825.20 : x
  2. Step 2: Convert to fraction form
    101,408.40/152,112.60 = 100,825.20/x
  3. Step 3: Cross multiply
    101,408.40x = 152,112.60 × 100,825.20
  4. Step 4: Simplify right side
    101,408.40x = 15,336,783,317.52
  5. Step 5: Solve for x
    x = 15,336,783,317.52/101,408.40
  6. Step 6: Final answer
    x = 151,237.80

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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.