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Finding the Fourth Proportional to 188,342.48, 259,914.42 and 103,459.55

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Solution

The fourth proportional to 188,342.48, 259,914.42 and 103,459.55 is: 142,775.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,342.48 : 259,914.42 = 103,459.55 : x
  2. Step 2: Convert to fraction form
    188,342.48/259,914.42 = 103,459.55/x
  3. Step 3: Cross multiply
    188,342.48x = 259,914.42 × 103,459.55
  4. Step 4: Simplify right side
    188,342.48x = 26,890,627,632.14
  5. Step 5: Solve for x
    x = 26,890,627,632.14/188,342.48
  6. Step 6: Final answer
    x = 142,775.16

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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.