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Finding the Fourth Proportional to 169,435.52, 254,145.59 and 74,640.38

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Solution

The fourth proportional to 169,435.52, 254,145.59 and 74,640.38 is: 111,957.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,435.52 : 254,145.59 = 74,640.38 : x
  2. Step 2: Convert to fraction form
    169,435.52/254,145.59 = 74,640.38/x
  3. Step 3: Cross multiply
    169,435.52x = 254,145.59 × 74,640.38
  4. Step 4: Simplify right side
    169,435.52x = 18,969,521,768.99
  5. Step 5: Solve for x
    x = 18,969,521,768.99/169,435.52
  6. Step 6: Final answer
    x = 111,957.18

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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.