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Finding the Fourth Proportional to 158,171.81, 218,195.35 and 107,167.08

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Solution

The fourth proportional to 158,171.81, 218,195.35 and 107,167.08 is: 147,835.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,171.81 : 218,195.35 = 107,167.08 : x
  2. Step 2: Convert to fraction form
    158,171.81/218,195.35 = 107,167.08/x
  3. Step 3: Cross multiply
    158,171.81x = 218,195.35 × 107,167.08
  4. Step 4: Simplify right side
    158,171.81x = 23,383,359,079.39
  5. Step 5: Solve for x
    x = 23,383,359,079.39/158,171.81
  6. Step 6: Final answer
    x = 147,835.19

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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.