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Finding the Fourth Proportional to 158,243.73, 218,378.43 and 86,622.21

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Solution

The fourth proportional to 158,243.73, 218,378.43 and 86,622.21 is: 119,539.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,243.73 : 218,378.43 = 86,622.21 : x
  2. Step 2: Convert to fraction form
    158,243.73/218,378.43 = 86,622.21/x
  3. Step 3: Cross multiply
    158,243.73x = 218,378.43 × 86,622.21
  4. Step 4: Simplify right side
    158,243.73x = 18,916,422,222.93
  5. Step 5: Solve for x
    x = 18,916,422,222.93/158,243.73
  6. Step 6: Final answer
    x = 119,539.79

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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.