Home / 135,183.47-186,558.09-87,436.80

Finding the Fourth Proportional to 135,183.47, 186,558.09 and 87,436.80

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Solution

The fourth proportional to 135,183.47, 186,558.09 and 87,436.80 is: 120,665.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,183.47 : 186,558.09 = 87,436.80 : x
  2. Step 2: Convert to fraction form
    135,183.47/186,558.09 = 87,436.80/x
  3. Step 3: Cross multiply
    135,183.47x = 186,558.09 × 87,436.80
  4. Step 4: Simplify right side
    135,183.47x = 16,312,042,075.82
  5. Step 5: Solve for x
    x = 16,312,042,075.82/135,183.47
  6. Step 6: Final answer
    x = 120,665.96

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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.