Home / 83,900.26-125,702.76-78,905.70

Finding the Fourth Proportional to 83,900.26, 125,702.76 and 78,905.70

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Solution

The fourth proportional to 83,900.26, 125,702.76 and 78,905.70 is: 118,219.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,900.26 : 125,702.76 = 78,905.70 : x
  2. Step 2: Convert to fraction form
    83,900.26/125,702.76 = 78,905.70/x
  3. Step 3: Cross multiply
    83,900.26x = 125,702.76 × 78,905.70
  4. Step 4: Simplify right side
    83,900.26x = 9,918,664,269.73
  5. Step 5: Solve for x
    x = 9,918,664,269.73/83,900.26
  6. Step 6: Final answer
    x = 118,219.71

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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.