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Finding the Fourth Proportional to 125,512.70, 188,269.05 and 72,368.60

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Solution

The fourth proportional to 125,512.70, 188,269.05 and 72,368.60 is: 108,552.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,512.70 : 188,269.05 = 72,368.60 : x
  2. Step 2: Convert to fraction form
    125,512.70/188,269.05 = 72,368.60/x
  3. Step 3: Cross multiply
    125,512.70x = 188,269.05 × 72,368.60
  4. Step 4: Simplify right side
    125,512.70x = 13,624,767,571.83
  5. Step 5: Solve for x
    x = 13,624,767,571.83/125,512.70
  6. Step 6: Final answer
    x = 108,552.90

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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.