Home / 135,787.56-203,678.24-79,981.67

Finding the Fourth Proportional to 135,787.56, 203,678.24 and 79,981.67

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Solution

The fourth proportional to 135,787.56, 203,678.24 and 79,981.67 is: 119,970.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,787.56 : 203,678.24 = 79,981.67 : x
  2. Step 2: Convert to fraction form
    135,787.56/203,678.24 = 79,981.67/x
  3. Step 3: Cross multiply
    135,787.56x = 203,678.24 × 79,981.67
  4. Step 4: Simplify right side
    135,787.56x = 16,290,524,359.56
  5. Step 5: Solve for x
    x = 16,290,524,359.56/135,787.56
  6. Step 6: Final answer
    x = 119,970.67

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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.