Home / 87,136.20-130,704.30-83,855.70

Finding the Fourth Proportional to 87,136.20, 130,704.30 and 83,855.70

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Solution

The fourth proportional to 87,136.20, 130,704.30 and 83,855.70 is: 125,783.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,136.20 : 130,704.30 = 83,855.70 : x
  2. Step 2: Convert to fraction form
    87,136.20/130,704.30 = 83,855.70/x
  3. Step 3: Cross multiply
    87,136.20x = 130,704.30 × 83,855.70
  4. Step 4: Simplify right side
    87,136.20x = 10,960,300,569.51
  5. Step 5: Solve for x
    x = 10,960,300,569.51/87,136.20
  6. Step 6: Final answer
    x = 125,783.55

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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.