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Finding the Fourth Proportional to 150,650.88, 207,864.72 and 86,974.80

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Solution

The fourth proportional to 150,650.88, 207,864.72 and 86,974.80 is: 120,005.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,650.88 : 207,864.72 = 86,974.80 : x
  2. Step 2: Convert to fraction form
    150,650.88/207,864.72 = 86,974.80/x
  3. Step 3: Cross multiply
    150,650.88x = 207,864.72 × 86,974.80
  4. Step 4: Simplify right side
    150,650.88x = 18,078,992,449.06
  5. Step 5: Solve for x
    x = 18,078,992,449.06/150,650.88
  6. Step 6: Final answer
    x = 120,005.89

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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.