Home / 208,084.70-312,127.05-74,969.30

Finding the Fourth Proportional to 208,084.70, 312,127.05 and 74,969.30

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Solution

The fourth proportional to 208,084.70, 312,127.05 and 74,969.30 is: 112,453.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,084.70 : 312,127.05 = 74,969.30 : x
  2. Step 2: Convert to fraction form
    208,084.70/312,127.05 = 74,969.30/x
  3. Step 3: Cross multiply
    208,084.70x = 312,127.05 × 74,969.30
  4. Step 4: Simplify right side
    208,084.70x = 23,399,946,449.57
  5. Step 5: Solve for x
    x = 23,399,946,449.57/208,084.70
  6. Step 6: Final answer
    x = 112,453.95

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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.