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Finding the Fourth Proportional to 188,364.45, 259,943.03 and 103,486.98

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Solution

The fourth proportional to 188,364.45, 259,943.03 and 103,486.98 is: 142,812.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,364.45 : 259,943.03 = 103,486.98 : x
  2. Step 2: Convert to fraction form
    188,364.45/259,943.03 = 103,486.98/x
  3. Step 3: Cross multiply
    188,364.45x = 259,943.03 × 103,486.98
  4. Step 4: Simplify right side
    188,364.45x = 26,900,719,146.75
  5. Step 5: Solve for x
    x = 26,900,719,146.75/188,364.45
  6. Step 6: Final answer
    x = 142,812.08

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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.