Home / 100,834.16-139,136.96-66,789.84

Finding the Fourth Proportional to 100,834.16, 139,136.96 and 66,789.84

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Solution

The fourth proportional to 100,834.16, 139,136.96 and 66,789.84 is: 92,160.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,834.16 : 139,136.96 = 66,789.84 : x
  2. Step 2: Convert to fraction form
    100,834.16/139,136.96 = 66,789.84/x
  3. Step 3: Cross multiply
    100,834.16x = 139,136.96 × 66,789.84
  4. Step 4: Simplify right side
    100,834.16x = 9,292,935,296.49
  5. Step 5: Solve for x
    x = 9,292,935,296.49/100,834.16
  6. Step 6: Final answer
    x = 92,160.59

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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.