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Finding the Fourth Proportional to 139,164.03, 208,759.71 and 39,324.98

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Solution

The fourth proportional to 139,164.03, 208,759.71 and 39,324.98 is: 58,991.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,164.03 : 208,759.71 = 39,324.98 : x
  2. Step 2: Convert to fraction form
    139,164.03/208,759.71 = 39,324.98/x
  3. Step 3: Cross multiply
    139,164.03x = 208,759.71 × 39,324.98
  4. Step 4: Simplify right side
    139,164.03x = 8,209,470,376.76
  5. Step 5: Solve for x
    x = 8,209,470,376.76/139,164.03
  6. Step 6: Final answer
    x = 58,991.32

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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.