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Finding the Fourth Proportional to 113,419, 156,508.02 and 65,675.56

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Solution

The fourth proportional to 113,419, 156,508.02 and 65,675.56 is: 90,626.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,419 : 156,508.02 = 65,675.56 : x
  2. Step 2: Convert to fraction form
    113,419/156,508.02 = 65,675.56/x
  3. Step 3: Cross multiply
    113,419x = 156,508.02 × 65,675.56
  4. Step 4: Simplify right side
    113,419x = 10,278,751,857.99
  5. Step 5: Solve for x
    x = 10,278,751,857.99/113,419
  6. Step 6: Final answer
    x = 90,626.37

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1.5x scale

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.