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Finding the Fourth Proportional to 158,611.64, 218,863.82 and 90,633.02

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Solution

The fourth proportional to 158,611.64, 218,863.82 and 90,633.02 is: 125,062.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,611.64 : 218,863.82 = 90,633.02 : x
  2. Step 2: Convert to fraction form
    158,611.64/218,863.82 = 90,633.02/x
  3. Step 3: Cross multiply
    158,611.64x = 218,863.82 × 90,633.02
  4. Step 4: Simplify right side
    158,611.64x = 19,836,288,975.34
  5. Step 5: Solve for x
    x = 19,836,288,975.34/158,611.64
  6. Step 6: Final answer
    x = 125,062.00

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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.