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Finding the Fourth Proportional to 100,938.72, 151,408.08 and 41,709.30

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Solution

The fourth proportional to 100,938.72, 151,408.08 and 41,709.30 is: 62,563.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,938.72 : 151,408.08 = 41,709.30 : x
  2. Step 2: Convert to fraction form
    100,938.72/151,408.08 = 41,709.30/x
  3. Step 3: Cross multiply
    100,938.72x = 151,408.08 × 41,709.30
  4. Step 4: Simplify right side
    100,938.72x = 6,315,125,031.14
  5. Step 5: Solve for x
    x = 6,315,125,031.14/100,938.72
  6. Step 6: Final answer
    x = 62,563.95

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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.