Home / 87,405.20-131,107.80-73,408.40

Finding the Fourth Proportional to 87,405.20, 131,107.80 and 73,408.40

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Solution

The fourth proportional to 87,405.20, 131,107.80 and 73,408.40 is: 110,112.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,405.20 : 131,107.80 = 73,408.40 : x
  2. Step 2: Convert to fraction form
    87,405.20/131,107.80 = 73,408.40/x
  3. Step 3: Cross multiply
    87,405.20x = 131,107.80 × 73,408.40
  4. Step 4: Simplify right side
    87,405.20x = 9,624,413,825.52
  5. Step 5: Solve for x
    x = 9,624,413,825.52/87,405.20
  6. Step 6: Final answer
    x = 110,112.60

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1.5x scale

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.