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Finding the Fourth Proportional to 140,686, 211,029 and 42,190

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Solution

The fourth proportional to 140,686, 211,029 and 42,190 is: 63,285

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,686 : 211,029 = 42,190 : x
  2. Step 2: Convert to fraction form
    140,686/211,029 = 42,190/x
  3. Step 3: Cross multiply
    140,686x = 211,029 × 42,190
  4. Step 4: Simplify right side
    140,686x = 8,903,313,510
  5. Step 5: Solve for x
    x = 8,903,313,510/140,686
  6. Step 6: Final answer
    x = 63,285

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.