Home / 123,157.72-169,957.69-66,569.09

Finding the Fourth Proportional to 123,157.72, 169,957.69 and 66,569.09

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Solution

The fourth proportional to 123,157.72, 169,957.69 and 66,569.09 is: 91,865.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,157.72 : 169,957.69 = 66,569.09 : x
  2. Step 2: Convert to fraction form
    123,157.72/169,957.69 = 66,569.09/x
  3. Step 3: Cross multiply
    123,157.72x = 169,957.69 × 66,569.09
  4. Step 4: Simplify right side
    123,157.72x = 11,313,929,076.05
  5. Step 5: Solve for x
    x = 11,313,929,076.05/123,157.72
  6. Step 6: Final answer
    x = 91,865.37

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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.