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Finding the Fourth Proportional to 158,353.30, 218,528.04 and 86,736.34

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Solution

The fourth proportional to 158,353.30, 218,528.04 and 86,736.34 is: 119,696.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,353.30 : 218,528.04 = 86,736.34 : x
  2. Step 2: Convert to fraction form
    158,353.30/218,528.04 = 86,736.34/x
  3. Step 3: Cross multiply
    158,353.30x = 218,528.04 × 86,736.34
  4. Step 4: Simplify right side
    158,353.30x = 18,954,322,376.97
  5. Step 5: Solve for x
    x = 18,954,322,376.97/158,353.30
  6. Step 6: Final answer
    x = 119,696.42

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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.