Home / 135,231.21-186,556.23-87,499.98

Finding the Fourth Proportional to 135,231.21, 186,556.23 and 87,499.98

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Solution

The fourth proportional to 135,231.21, 186,556.23 and 87,499.98 is: 120,709.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,231.21 : 186,556.23 = 87,499.98 : x
  2. Step 2: Convert to fraction form
    135,231.21/186,556.23 = 87,499.98/x
  3. Step 3: Cross multiply
    135,231.21x = 186,556.23 × 87,499.98
  4. Step 4: Simplify right side
    135,231.21x = 16,323,666,393.88
  5. Step 5: Solve for x
    x = 16,323,666,393.88/135,231.21
  6. Step 6: Final answer
    x = 120,709.31

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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.