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Finding the Fourth Proportional to 188,235.40, 259,765.28 and 103,357.92

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Solution

The fourth proportional to 188,235.40, 259,765.28 and 103,357.92 is: 142,634.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,235.40 : 259,765.28 = 103,357.92 : x
  2. Step 2: Convert to fraction form
    188,235.40/259,765.28 = 103,357.92/x
  3. Step 3: Cross multiply
    188,235.40x = 259,765.28 × 103,357.92
  4. Step 4: Simplify right side
    188,235.40x = 26,848,799,029.02
  5. Step 5: Solve for x
    x = 26,848,799,029.02/188,235.40
  6. Step 6: Final answer
    x = 142,634.16

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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.