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Finding the Fourth Proportional to 188,079.60, 259,550.16 and 103,197.30

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Solution

The fourth proportional to 188,079.60, 259,550.16 and 103,197.30 is: 142,412.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,079.60 : 259,550.16 = 103,197.30 : x
  2. Step 2: Convert to fraction form
    188,079.60/259,550.16 = 103,197.30/x
  3. Step 3: Cross multiply
    188,079.60x = 259,550.16 × 103,197.30
  4. Step 4: Simplify right side
    188,079.60x = 26,784,875,726.57
  5. Step 5: Solve for x
    x = 26,784,875,726.57/188,079.60
  6. Step 6: Final answer
    x = 142,412.45

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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.