Home / 135,795.08-187,267.03-81,338.54

Finding the Fourth Proportional to 135,795.08, 187,267.03 and 81,338.54

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Solution

The fourth proportional to 135,795.08, 187,267.03 and 81,338.54 is: 112,169.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,795.08 : 187,267.03 = 81,338.54 : x
  2. Step 2: Convert to fraction form
    135,795.08/187,267.03 = 81,338.54/x
  3. Step 3: Cross multiply
    135,795.08x = 187,267.03 × 81,338.54
  4. Step 4: Simplify right side
    135,795.08x = 15,232,025,670.65
  5. Step 5: Solve for x
    x = 15,232,025,670.65/135,795.08
  6. Step 6: Final answer
    x = 112,169.20

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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.