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Finding the Fourth Proportional to 188,575.72, 260,235.62 and 103,698.28

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Solution

The fourth proportional to 188,575.72, 260,235.62 and 103,698.28 is: 143,104.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,575.72 : 260,235.62 = 103,698.28 : x
  2. Step 2: Convert to fraction form
    188,575.72/260,235.62 = 103,698.28/x
  3. Step 3: Cross multiply
    188,575.72x = 260,235.62 × 103,698.28
  4. Step 4: Simplify right side
    188,575.72x = 26,985,986,188.73
  5. Step 5: Solve for x
    x = 26,985,986,188.73/188,575.72
  6. Step 6: Final answer
    x = 143,104.25

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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.