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Finding the Fourth Proportional to 187,136.60, 280,704.90 and 108,210.20

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Solution

The fourth proportional to 187,136.60, 280,704.90 and 108,210.20 is: 162,315.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,136.60 : 280,704.90 = 108,210.20 : x
  2. Step 2: Convert to fraction form
    187,136.60/280,704.90 = 108,210.20/x
  3. Step 3: Cross multiply
    187,136.60x = 280,704.90 × 108,210.20
  4. Step 4: Simplify right side
    187,136.60x = 30,375,133,369.98
  5. Step 5: Solve for x
    x = 30,375,133,369.98/187,136.60
  6. Step 6: Final answer
    x = 162,315.30

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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.