Home / 208,968.20-313,502.70-68,719.40

Finding the Fourth Proportional to 208,968.20, 313,502.70 and 68,719.40

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Solution

The fourth proportional to 208,968.20, 313,502.70 and 68,719.40 is: 103,095.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,968.20 : 313,502.70 = 68,719.40 : x
  2. Step 2: Convert to fraction form
    208,968.20/313,502.70 = 68,719.40/x
  3. Step 3: Cross multiply
    208,968.20x = 313,502.70 × 68,719.40
  4. Step 4: Simplify right side
    208,968.20x = 21,543,717,442.38
  5. Step 5: Solve for x
    x = 21,543,717,442.38/208,968.20
  6. Step 6: Final answer
    x = 103,095.67

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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.