Home / 87,611.20-131,416.80-86,833.60

Finding the Fourth Proportional to 87,611.20, 131,416.80 and 86,833.60

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Solution

The fourth proportional to 87,611.20, 131,416.80 and 86,833.60 is: 130,250.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,611.20 : 131,416.80 = 86,833.60 : x
  2. Step 2: Convert to fraction form
    87,611.20/131,416.80 = 86,833.60/x
  3. Step 3: Cross multiply
    87,611.20x = 131,416.80 × 86,833.60
  4. Step 4: Simplify right side
    87,611.20x = 11,411,393,844.48
  5. Step 5: Solve for x
    x = 11,411,393,844.48/87,611.20
  6. Step 6: Final answer
    x = 130,250.40

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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.