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Finding the Fourth Proportional to 158,523.35, 218,759.67 and 86,903.96

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Solution

The fourth proportional to 158,523.35, 218,759.67 and 86,903.96 is: 119,926.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,523.35 : 218,759.67 = 86,903.96 : x
  2. Step 2: Convert to fraction form
    158,523.35/218,759.67 = 86,903.96/x
  3. Step 3: Cross multiply
    158,523.35x = 218,759.67 × 86,903.96
  4. Step 4: Simplify right side
    158,523.35x = 19,011,080,517.49
  5. Step 5: Solve for x
    x = 19,011,080,517.49/158,523.35
  6. Step 6: Final answer
    x = 119,926.06

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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.