Home / 135,818.84-187,299.51-81,362.41

Finding the Fourth Proportional to 135,818.84, 187,299.51 and 81,362.41

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Solution

The fourth proportional to 135,818.84, 187,299.51 and 81,362.41 is: 112,201.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,818.84 : 187,299.51 = 81,362.41 : x
  2. Step 2: Convert to fraction form
    135,818.84/187,299.51 = 81,362.41/x
  3. Step 3: Cross multiply
    135,818.84x = 187,299.51 × 81,362.41
  4. Step 4: Simplify right side
    135,818.84x = 15,239,139,525.42
  5. Step 5: Solve for x
    x = 15,239,139,525.42/135,818.84
  6. Step 6: Final answer
    x = 112,201.96

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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.