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Finding the Fourth Proportional to 150,793.78, 208,121.01 and 87,168.46

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Solution

The fourth proportional to 150,793.78, 208,121.01 and 87,168.46 is: 120,307.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,793.78 : 208,121.01 = 87,168.46 : x
  2. Step 2: Convert to fraction form
    150,793.78/208,121.01 = 87,168.46/x
  3. Step 3: Cross multiply
    150,793.78x = 208,121.01 × 87,168.46
  4. Step 4: Simplify right side
    150,793.78x = 18,141,587,935.34
  5. Step 5: Solve for x
    x = 18,141,587,935.34/150,793.78
  6. Step 6: Final answer
    x = 120,307.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.