Home / 133,112.70-199,669.05-54,186.30

Finding the Fourth Proportional to 133,112.70, 199,669.05 and 54,186.30

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Solution

The fourth proportional to 133,112.70, 199,669.05 and 54,186.30 is: 81,279.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,112.70 : 199,669.05 = 54,186.30 : x
  2. Step 2: Convert to fraction form
    133,112.70/199,669.05 = 54,186.30/x
  3. Step 3: Cross multiply
    133,112.70x = 199,669.05 × 54,186.30
  4. Step 4: Simplify right side
    133,112.70x = 10,819,327,044.02
  5. Step 5: Solve for x
    x = 10,819,327,044.02/133,112.70
  6. Step 6: Final answer
    x = 81,279.45

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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.