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Finding the Fourth Proportional to 129,797.28, 179,120.22 and 70,181.28

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Solution

The fourth proportional to 129,797.28, 179,120.22 and 70,181.28 is: 96,850.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,797.28 : 179,120.22 = 70,181.28 : x
  2. Step 2: Convert to fraction form
    129,797.28/179,120.22 = 70,181.28/x
  3. Step 3: Cross multiply
    129,797.28x = 179,120.22 × 70,181.28
  4. Step 4: Simplify right side
    129,797.28x = 12,570,886,313.48
  5. Step 5: Solve for x
    x = 12,570,886,313.48/129,797.28
  6. Step 6: Final answer
    x = 96,850.15

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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.