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Finding the Fourth Proportional to 158,614.74, 218,891.75 and 86,994.59

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Solution

The fourth proportional to 158,614.74, 218,891.75 and 86,994.59 is: 120,054.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,614.74 : 218,891.75 = 86,994.59 : x
  2. Step 2: Convert to fraction form
    158,614.74/218,891.75 = 86,994.59/x
  3. Step 3: Cross multiply
    158,614.74x = 218,891.75 × 86,994.59
  4. Step 4: Simplify right side
    158,614.74x = 19,042,396,516.20
  5. Step 5: Solve for x
    x = 19,042,396,516.20/158,614.74
  6. Step 6: Final answer
    x = 120,054.39

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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.