Home / 68,136.47-102,196.91-18,220.46

Finding the Fourth Proportional to 68,136.47, 102,196.91 and 18,220.46

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Solution

The fourth proportional to 68,136.47, 102,196.91 and 18,220.46 is: 27,328.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,136.47 : 102,196.91 = 18,220.46 : x
  2. Step 2: Convert to fraction form
    68,136.47/102,196.91 = 18,220.46/x
  3. Step 3: Cross multiply
    68,136.47x = 102,196.91 × 18,220.46
  4. Step 4: Simplify right side
    68,136.47x = 1,862,074,245.35
  5. Step 5: Solve for x
    x = 1,862,074,245.35/68,136.47
  6. Step 6: Final answer
    x = 27,328.60

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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.