Home / 151,563.42-209,002.68-100,558.26

Finding the Fourth Proportional to 151,563.42, 209,002.68 and 100,558.26

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Solution

The fourth proportional to 151,563.42, 209,002.68 and 100,558.26 is: 138,667.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,563.42 : 209,002.68 = 100,558.26 : x
  2. Step 2: Convert to fraction form
    151,563.42/209,002.68 = 100,558.26/x
  3. Step 3: Cross multiply
    151,563.42x = 209,002.68 × 100,558.26
  4. Step 4: Simplify right side
    151,563.42x = 21,016,945,836.14
  5. Step 5: Solve for x
    x = 21,016,945,836.14/151,563.42
  6. Step 6: Final answer
    x = 138,667.67

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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.