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Finding the Fourth Proportional to 149,991.40, 224,622.60 and 79,715.80

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Solution

The fourth proportional to 149,991.40, 224,622.60 and 79,715.80 is: 119,379.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,991.40 : 224,622.60 = 79,715.80 : x
  2. Step 2: Convert to fraction form
    149,991.40/224,622.60 = 79,715.80/x
  3. Step 3: Cross multiply
    149,991.40x = 224,622.60 × 79,715.80
  4. Step 4: Simplify right side
    149,991.40x = 17,905,970,257.08
  5. Step 5: Solve for x
    x = 17,905,970,257.08/149,991.40
  6. Step 6: Final answer
    x = 119,379.98

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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.