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Finding the Fourth Proportional to 169,438.42, 254,149.93 and 74,643.24

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Solution

The fourth proportional to 169,438.42, 254,149.93 and 74,643.24 is: 111,961.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,438.42 : 254,149.93 = 74,643.24 : x
  2. Step 2: Convert to fraction form
    169,438.42/254,149.93 = 74,643.24/x
  3. Step 3: Cross multiply
    169,438.42x = 254,149.93 × 74,643.24
  4. Step 4: Simplify right side
    169,438.42x = 18,970,574,220.97
  5. Step 5: Solve for x
    x = 18,970,574,220.97/169,438.42
  6. Step 6: Final answer
    x = 111,961.47

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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.