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Finding the Fourth Proportional to 139,318.35, 208,977.53 and 34,136.41

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Solution

The fourth proportional to 139,318.35, 208,977.53 and 34,136.41 is: 51,204.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,318.35 : 208,977.53 = 34,136.41 : x
  2. Step 2: Convert to fraction form
    139,318.35/208,977.53 = 34,136.41/x
  3. Step 3: Cross multiply
    139,318.35x = 208,977.53 × 34,136.41
  4. Step 4: Simplify right side
    139,318.35x = 7,133,742,644.87
  5. Step 5: Solve for x
    x = 7,133,742,644.87/139,318.35
  6. Step 6: Final answer
    x = 51,204.62

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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.