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Finding the Fourth Proportional to 169,435.52, 254,145.59 and 74,640.37

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Solution

The fourth proportional to 169,435.52, 254,145.59 and 74,640.37 is: 111,957.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,435.52 : 254,145.59 = 74,640.37 : x
  2. Step 2: Convert to fraction form
    169,435.52/254,145.59 = 74,640.37/x
  3. Step 3: Cross multiply
    169,435.52x = 254,145.59 × 74,640.37
  4. Step 4: Simplify right side
    169,435.52x = 18,969,519,862.90
  5. Step 5: Solve for x
    x = 18,969,519,862.90/169,435.52
  6. Step 6: Final answer
    x = 111,957.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.