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Finding the Fourth Proportional to 104,469.64, 144,286.80 and 70,419.40

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Solution

The fourth proportional to 104,469.64, 144,286.80 and 70,419.40 is: 97,258.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,469.64 : 144,286.80 = 70,419.40 : x
  2. Step 2: Convert to fraction form
    104,469.64/144,286.80 = 70,419.40/x
  3. Step 3: Cross multiply
    104,469.64x = 144,286.80 × 70,419.40
  4. Step 4: Simplify right side
    104,469.64x = 10,160,589,883.92
  5. Step 5: Solve for x
    x = 10,160,589,883.92/104,469.64
  6. Step 6: Final answer
    x = 97,258.78

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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.