Home / 102,679.90-154,074.99-42,749.75

Finding the Fourth Proportional to 102,679.90, 154,074.99 and 42,749.75

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Solution

The fourth proportional to 102,679.90, 154,074.99 and 42,749.75 is: 64,147.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,679.90 : 154,074.99 = 42,749.75 : x
  2. Step 2: Convert to fraction form
    102,679.90/154,074.99 = 42,749.75/x
  3. Step 3: Cross multiply
    102,679.90x = 154,074.99 × 42,749.75
  4. Step 4: Simplify right side
    102,679.90x = 6,586,667,303.75
  5. Step 5: Solve for x
    x = 6,586,667,303.75/102,679.90
  6. Step 6: Final answer
    x = 64,147.58

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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.