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Finding the Fourth Proportional to 158,571.23, 218,828.12 and 86,952.42

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Solution

The fourth proportional to 158,571.23, 218,828.12 and 86,952.42 is: 119,994.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,571.23 : 218,828.12 = 86,952.42 : x
  2. Step 2: Convert to fraction form
    158,571.23/218,828.12 = 86,952.42/x
  3. Step 3: Cross multiply
    158,571.23x = 218,828.12 × 86,952.42
  4. Step 4: Simplify right side
    158,571.23x = 19,027,634,163.29
  5. Step 5: Solve for x
    x = 19,027,634,163.29/158,571.23
  6. Step 6: Final answer
    x = 119,994.24

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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.