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Finding the Fourth Proportional to 113,375.08, 156,439.92 and 65,619.10

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Solution

The fourth proportional to 113,375.08, 156,439.92 and 65,619.10 is: 90,544.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,375.08 : 156,439.92 = 65,619.10 : x
  2. Step 2: Convert to fraction form
    113,375.08/156,439.92 = 65,619.10/x
  3. Step 3: Cross multiply
    113,375.08x = 156,439.92 × 65,619.10
  4. Step 4: Simplify right side
    113,375.08x = 10,265,446,754.47
  5. Step 5: Solve for x
    x = 10,265,446,754.47/113,375.08
  6. Step 6: Final answer
    x = 90,544.12

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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.