Home / 147,871.32-203,986.62-100,107.96

Finding the Fourth Proportional to 147,871.32, 203,986.62 and 100,107.96

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Solution

The fourth proportional to 147,871.32, 203,986.62 and 100,107.96 is: 138,097.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,871.32 : 203,986.62 = 100,107.96 : x
  2. Step 2: Convert to fraction form
    147,871.32/203,986.62 = 100,107.96/x
  3. Step 3: Cross multiply
    147,871.32x = 203,986.62 × 100,107.96
  4. Step 4: Simplify right side
    147,871.32x = 20,420,684,395.50
  5. Step 5: Solve for x
    x = 20,420,684,395.50/147,871.32
  6. Step 6: Final answer
    x = 138,097.67

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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.