Home / 123,221.12-183,940.36-108,274.28

Finding the Fourth Proportional to 123,221.12, 183,940.36 and 108,274.28

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Solution

The fourth proportional to 123,221.12, 183,940.36 and 108,274.28 is: 161,628.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,221.12 : 183,940.36 = 108,274.28 : x
  2. Step 2: Convert to fraction form
    123,221.12/183,940.36 = 108,274.28/x
  3. Step 3: Cross multiply
    123,221.12x = 183,940.36 × 108,274.28
  4. Step 4: Simplify right side
    123,221.12x = 19,916,010,041.94
  5. Step 5: Solve for x
    x = 19,916,010,041.94/123,221.12
  6. Step 6: Final answer
    x = 161,628.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.