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Finding the Fourth Proportional to 139,524.56, 209,321.95 and 39,684.77

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Solution

The fourth proportional to 139,524.56, 209,321.95 and 39,684.77 is: 59,537.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,524.56 : 209,321.95 = 39,684.77 : x
  2. Step 2: Convert to fraction form
    139,524.56/209,321.95 = 39,684.77/x
  3. Step 3: Cross multiply
    139,524.56x = 209,321.95 × 39,684.77
  4. Step 4: Simplify right side
    139,524.56x = 8,306,893,441.70
  5. Step 5: Solve for x
    x = 8,306,893,441.70/139,524.56
  6. Step 6: Final answer
    x = 59,537.14

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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.