Home / 135,783.12-203,608.83-79,641.57

Finding the Fourth Proportional to 135,783.12, 203,608.83 and 79,641.57

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Solution

The fourth proportional to 135,783.12, 203,608.83 and 79,641.57 is: 119,423.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,783.12 : 203,608.83 = 79,641.57 : x
  2. Step 2: Convert to fraction form
    135,783.12/203,608.83 = 79,641.57/x
  3. Step 3: Cross multiply
    135,783.12x = 203,608.83 × 79,641.57
  4. Step 4: Simplify right side
    135,783.12x = 16,215,726,887.06
  5. Step 5: Solve for x
    x = 16,215,726,887.06/135,783.12
  6. Step 6: Final answer
    x = 119,423.73

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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.