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Finding the Fourth Proportional to 139,731, 209,601.36 and 46,234.32

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Solution

The fourth proportional to 139,731, 209,601.36 and 46,234.32 is: 69,353.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,731 : 209,601.36 = 46,234.32 : x
  2. Step 2: Convert to fraction form
    139,731/209,601.36 = 46,234.32/x
  3. Step 3: Cross multiply
    139,731x = 209,601.36 × 46,234.32
  4. Step 4: Simplify right side
    139,731x = 9,690,776,350.68
  5. Step 5: Solve for x
    x = 9,690,776,350.68/139,731
  6. Step 6: Final answer
    x = 69,353.09

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1.5x scale

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.