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Finding the Fourth Proportional to 111,659.60, 167,489.40 and 103,786.40

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Solution

The fourth proportional to 111,659.60, 167,489.40 and 103,786.40 is: 155,679.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,659.60 : 167,489.40 = 103,786.40 : x
  2. Step 2: Convert to fraction form
    111,659.60/167,489.40 = 103,786.40/x
  3. Step 3: Cross multiply
    111,659.60x = 167,489.40 × 103,786.40
  4. Step 4: Simplify right side
    111,659.60x = 17,383,121,864.16
  5. Step 5: Solve for x
    x = 17,383,121,864.16/111,659.60
  6. Step 6: Final answer
    x = 155,679.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.