Home / 208,424.56-312,680.60-68,172.24

Finding the Fourth Proportional to 208,424.56, 312,680.60 and 68,172.24

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Solution

The fourth proportional to 208,424.56, 312,680.60 and 68,172.24 is: 102,272.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,424.56 : 312,680.60 = 68,172.24 : x
  2. Step 2: Convert to fraction form
    208,424.56/312,680.60 = 68,172.24/x
  3. Step 3: Cross multiply
    208,424.56x = 312,680.60 × 68,172.24
  4. Step 4: Simplify right side
    208,424.56x = 21,316,136,906.54
  5. Step 5: Solve for x
    x = 21,316,136,906.54/208,424.56
  6. Step 6: Final answer
    x = 102,272.67

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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.