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Finding the Fourth Proportional to 188,381, 259,850.40 and 111,848.12

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Solution

The fourth proportional to 188,381, 259,850.40 and 111,848.12 is: 154,281.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,381 : 259,850.40 = 111,848.12 : x
  2. Step 2: Convert to fraction form
    188,381/259,850.40 = 111,848.12/x
  3. Step 3: Cross multiply
    188,381x = 259,850.40 × 111,848.12
  4. Step 4: Simplify right side
    188,381x = 29,063,778,721.25
  5. Step 5: Solve for x
    x = 29,063,778,721.25/188,381
  6. Step 6: Final answer
    x = 154,281.90

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1.5x scale

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.