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Finding the Fourth Proportional to 188,303.88, 259,859.20 and 103,426.44

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Solution

The fourth proportional to 188,303.88, 259,859.20 and 103,426.44 is: 142,728.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,303.88 : 259,859.20 = 103,426.44 : x
  2. Step 2: Convert to fraction form
    188,303.88/259,859.20 = 103,426.44/x
  3. Step 3: Cross multiply
    188,303.88x = 259,859.20 × 103,426.44
  4. Step 4: Simplify right side
    188,303.88x = 26,876,311,957.25
  5. Step 5: Solve for x
    x = 26,876,311,957.25/188,303.88
  6. Step 6: Final answer
    x = 142,728.40

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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.