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Finding the Fourth Proportional to 188,297.99, 259,853.27 and 103,415.05

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Solution

The fourth proportional to 188,297.99, 259,853.27 and 103,415.05 is: 142,713.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,297.99 : 259,853.27 = 103,415.05 : x
  2. Step 2: Convert to fraction form
    188,297.99/259,853.27 = 103,415.05/x
  3. Step 3: Cross multiply
    188,297.99x = 259,853.27 × 103,415.05
  4. Step 4: Simplify right side
    188,297.99x = 26,872,738,909.71
  5. Step 5: Solve for x
    x = 26,872,738,909.71/188,297.99
  6. Step 6: Final answer
    x = 142,713.89

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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.