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Finding the Fourth Proportional to 158,549.28, 218,797.94 and 86,927.78

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Solution

The fourth proportional to 158,549.28, 218,797.94 and 86,927.78 is: 119,960.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,549.28 : 218,797.94 = 86,927.78 : x
  2. Step 2: Convert to fraction form
    158,549.28/218,797.94 = 86,927.78/x
  3. Step 3: Cross multiply
    158,549.28x = 218,797.94 × 86,927.78
  4. Step 4: Simplify right side
    158,549.28x = 19,019,617,664.14
  5. Step 5: Solve for x
    x = 19,019,617,664.14/158,549.28
  6. Step 6: Final answer
    x = 119,960.29

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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.