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Finding the Fourth Proportional to 125,930.70, 188,896.05 and 118,713.60

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Solution

The fourth proportional to 125,930.70, 188,896.05 and 118,713.60 is: 178,070.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,930.70 : 188,896.05 = 118,713.60 : x
  2. Step 2: Convert to fraction form
    125,930.70/188,896.05 = 118,713.60/x
  3. Step 3: Cross multiply
    125,930.70x = 188,896.05 × 118,713.60
  4. Step 4: Simplify right side
    125,930.70x = 22,424,530,121.28
  5. Step 5: Solve for x
    x = 22,424,530,121.28/125,930.70
  6. Step 6: Final answer
    x = 178,070.40

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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.