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Finding the Fourth Proportional to 210,793.37, 316,190.60 and 86,134.37

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Solution

The fourth proportional to 210,793.37, 316,190.60 and 86,134.37 is: 129,201.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,793.37 : 316,190.60 = 86,134.37 : x
  2. Step 2: Convert to fraction form
    210,793.37/316,190.60 = 86,134.37/x
  3. Step 3: Cross multiply
    210,793.37x = 316,190.60 × 86,134.37
  4. Step 4: Simplify right side
    210,793.37x = 27,234,877,700.25
  5. Step 5: Solve for x
    x = 27,234,877,700.25/210,793.37
  6. Step 6: Final answer
    x = 129,201.78

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1.5x scale

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.