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Finding the Fourth Proportional to 188,278.59, 259,823.12 and 103,393.95

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Solution

The fourth proportional to 188,278.59, 259,823.12 and 103,393.95 is: 142,682.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,278.59 : 259,823.12 = 103,393.95 : x
  2. Step 2: Convert to fraction form
    188,278.59/259,823.12 = 103,393.95/x
  3. Step 3: Cross multiply
    188,278.59x = 259,823.12 × 103,393.95
  4. Step 4: Simplify right side
    188,278.59x = 26,864,138,161.15
  5. Step 5: Solve for x
    x = 26,864,138,161.15/188,278.59
  6. Step 6: Final answer
    x = 142,682.92

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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.