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Finding the Fourth Proportional to 109,138.56, 150,609.84 and 61,392.24

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Solution

The fourth proportional to 109,138.56, 150,609.84 and 61,392.24 is: 84,720.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,138.56 : 150,609.84 = 61,392.24 : x
  2. Step 2: Convert to fraction form
    109,138.56/150,609.84 = 61,392.24/x
  3. Step 3: Cross multiply
    109,138.56x = 150,609.84 × 61,392.24
  4. Step 4: Simplify right side
    109,138.56x = 9,246,275,443.64
  5. Step 5: Solve for x
    x = 9,246,275,443.64/109,138.56
  6. Step 6: Final answer
    x = 84,720.52

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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.