Home / 117,136.03-161,491.39-87,940.80

Finding the Fourth Proportional to 117,136.03, 161,491.39 and 87,940.80

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Solution

The fourth proportional to 117,136.03, 161,491.39 and 87,940.80 is: 121,240.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,136.03 : 161,491.39 = 87,940.80 : x
  2. Step 2: Convert to fraction form
    117,136.03/161,491.39 = 87,940.80/x
  3. Step 3: Cross multiply
    117,136.03x = 161,491.39 × 87,940.80
  4. Step 4: Simplify right side
    117,136.03x = 14,201,682,029.71
  5. Step 5: Solve for x
    x = 14,201,682,029.71/117,136.03
  6. Step 6: Final answer
    x = 121,240.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.