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Finding the Fourth Proportional to 87,260.40, 130,890.60 and 75,855.60

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Solution

The fourth proportional to 87,260.40, 130,890.60 and 75,855.60 is: 113,783.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,260.40 : 130,890.60 = 75,855.60 : x
  2. Step 2: Convert to fraction form
    87,260.40/130,890.60 = 75,855.60/x
  3. Step 3: Cross multiply
    87,260.40x = 130,890.60 × 75,855.60
  4. Step 4: Simplify right side
    87,260.40x = 9,928,784,997.36
  5. Step 5: Solve for x
    x = 9,928,784,997.36/87,260.40
  6. Step 6: Final answer
    x = 113,783.40

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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.