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Finding the Fourth Proportional to 188,363.84, 259,931.30 and 103,479.08

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Solution

The fourth proportional to 188,363.84, 259,931.30 and 103,479.08 is: 142,795.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,363.84 : 259,931.30 = 103,479.08 : x
  2. Step 2: Convert to fraction form
    188,363.84/259,931.30 = 103,479.08/x
  3. Step 3: Cross multiply
    188,363.84x = 259,931.30 × 103,479.08
  4. Step 4: Simplify right side
    188,363.84x = 26,897,451,787.20
  5. Step 5: Solve for x
    x = 26,897,451,787.20/188,363.84
  6. Step 6: Final answer
    x = 142,795.20

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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.