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Finding the Fourth Proportional to 150,866.48, 208,172.60 and 87,191.98

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Solution

The fourth proportional to 150,866.48, 208,172.60 and 87,191.98 is: 120,311.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,866.48 : 208,172.60 = 87,191.98 : x
  2. Step 2: Convert to fraction form
    150,866.48/208,172.60 = 87,191.98/x
  3. Step 3: Cross multiply
    150,866.48x = 208,172.60 × 87,191.98
  4. Step 4: Simplify right side
    150,866.48x = 18,150,981,175.75
  5. Step 5: Solve for x
    x = 18,150,981,175.75/150,866.48
  6. Step 6: Final answer
    x = 120,311.56

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1.5x scale

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.