Home / 108,857.26-150,221.70-61,109.38

Finding the Fourth Proportional to 108,857.26, 150,221.70 and 61,109.38

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Solution

The fourth proportional to 108,857.26, 150,221.70 and 61,109.38 is: 84,330.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,857.26 : 150,221.70 = 61,109.38 : x
  2. Step 2: Convert to fraction form
    108,857.26/150,221.70 = 61,109.38/x
  3. Step 3: Cross multiply
    108,857.26x = 150,221.70 × 61,109.38
  4. Step 4: Simplify right side
    108,857.26x = 9,179,954,949.55
  5. Step 5: Solve for x
    x = 9,179,954,949.55/108,857.26
  6. Step 6: Final answer
    x = 84,330.20

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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.