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Finding the Fourth Proportional to 188,223.78, 259,749.24 and 103,346.30

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Solution

The fourth proportional to 188,223.78, 259,749.24 and 103,346.30 is: 142,618.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,223.78 : 259,749.24 = 103,346.30 : x
  2. Step 2: Convert to fraction form
    188,223.78/259,749.24 = 103,346.30/x
  3. Step 3: Cross multiply
    188,223.78x = 259,749.24 × 103,346.30
  4. Step 4: Simplify right side
    188,223.78x = 26,844,122,881.81
  5. Step 5: Solve for x
    x = 26,844,122,881.81/188,223.78
  6. Step 6: Final answer
    x = 142,618.13

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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.