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Finding the Fourth Proportional to 139,990, 209,985 and 41,494

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Solution

The fourth proportional to 139,990, 209,985 and 41,494 is: 62,241

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,990 : 209,985 = 41,494 : x
  2. Step 2: Convert to fraction form
    139,990/209,985 = 41,494/x
  3. Step 3: Cross multiply
    139,990x = 209,985 × 41,494
  4. Step 4: Simplify right side
    139,990x = 8,713,117,590
  5. Step 5: Solve for x
    x = 8,713,117,590/139,990
  6. Step 6: Final answer
    x = 62,241

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Why These Related Problems?

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