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Finding the Fourth Proportional to 207,967.78, 311,973.54 and 67,737.34

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Solution

The fourth proportional to 207,967.78, 311,973.54 and 67,737.34 is: 101,613.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,967.78 : 311,973.54 = 67,737.34 : x
  2. Step 2: Convert to fraction form
    207,967.78/311,973.54 = 67,737.34/x
  3. Step 3: Cross multiply
    207,967.78x = 311,973.54 × 67,737.34
  4. Step 4: Simplify right side
    207,967.78x = 21,132,257,749.98
  5. Step 5: Solve for x
    x = 21,132,257,749.98/207,967.78
  6. Step 6: Final answer
    x = 101,613.13

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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.