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Finding the Fourth Proportional to 137,217.30, 189,295.80 and 88,834.80

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Solution

The fourth proportional to 137,217.30, 189,295.80 and 88,834.80 is: 122,550.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,217.30 : 189,295.80 = 88,834.80 : x
  2. Step 2: Convert to fraction form
    137,217.30/189,295.80 = 88,834.80/x
  3. Step 3: Cross multiply
    137,217.30x = 189,295.80 × 88,834.80
  4. Step 4: Simplify right side
    137,217.30x = 16,816,054,533.84
  5. Step 5: Solve for x
    x = 16,816,054,533.84/137,217.30
  6. Step 6: Final answer
    x = 122,550.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.