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Finding the Fourth Proportional to 155,274, 214,440.75 and 107,001.42

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Solution

The fourth proportional to 155,274, 214,440.75 and 107,001.42 is: 147,774.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,274 : 214,440.75 = 107,001.42 : x
  2. Step 2: Convert to fraction form
    155,274/214,440.75 = 107,001.42/x
  3. Step 3: Cross multiply
    155,274x = 214,440.75 × 107,001.42
  4. Step 4: Simplify right side
    155,274x = 22,945,464,755.87
  5. Step 5: Solve for x
    x = 22,945,464,755.87/155,274
  6. Step 6: Final answer
    x = 147,774.03

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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.