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Finding the Fourth Proportional to 155,243.54, 214,110.78 and 104,240.90

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Solution

The fourth proportional to 155,243.54, 214,110.78 and 104,240.90 is: 143,768.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,243.54 : 214,110.78 = 104,240.90 : x
  2. Step 2: Convert to fraction form
    155,243.54/214,110.78 = 104,240.90/x
  3. Step 3: Cross multiply
    155,243.54x = 214,110.78 × 104,240.90
  4. Step 4: Simplify right side
    155,243.54x = 22,319,100,406.90
  5. Step 5: Solve for x
    x = 22,319,100,406.90/155,243.54
  6. Step 6: Final answer
    x = 143,768.30

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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.