Home / 100,969.20-139,185.36-83,033.10

Finding the Fourth Proportional to 100,969.20, 139,185.36 and 83,033.10

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Solution

The fourth proportional to 100,969.20, 139,185.36 and 83,033.10 is: 114,460.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,969.20 : 139,185.36 = 83,033.10 : x
  2. Step 2: Convert to fraction form
    100,969.20/139,185.36 = 83,033.10/x
  3. Step 3: Cross multiply
    100,969.20x = 139,185.36 × 83,033.10
  4. Step 4: Simplify right side
    100,969.20x = 11,556,991,915.42
  5. Step 5: Solve for x
    x = 11,556,991,915.42/100,969.20
  6. Step 6: Final answer
    x = 114,460.57

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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.