Home / 100,128,861.72-150,236,453.16-54,061,588.08

Finding the Fourth Proportional to 100,128,861.72, 150,236,453.16 and 54,061,588.08

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Solution

The fourth proportional to 100,128,861.72, 150,236,453.16 and 54,061,588.08 is: 81,115,685.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,128,861.72 : 150,236,453.16 = 54,061,588.08 : x
  2. Step 2: Convert to fraction form
    100,128,861.72/150,236,453.16 = 54,061,588.08/x
  3. Step 3: Cross multiply
    100,128,861.72x = 150,236,453.16 × 54,061,588.08
  4. Step 4: Simplify right side
    100,128,861.72x = 8,122,021,245,336,134
  5. Step 5: Solve for x
    x = 8,122,021,245,336,134/100,128,861.72
  6. Step 6: Final answer
    x = 81,115,685.39

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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.