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Finding the Fourth Proportional to 159,087.20, 238,630.80 and 133,037.60

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Solution

The fourth proportional to 159,087.20, 238,630.80 and 133,037.60 is: 199,556.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,087.20 : 238,630.80 = 133,037.60 : x
  2. Step 2: Convert to fraction form
    159,087.20/238,630.80 = 133,037.60/x
  3. Step 3: Cross multiply
    159,087.20x = 238,630.80 × 133,037.60
  4. Step 4: Simplify right side
    159,087.20x = 31,746,868,918.08
  5. Step 5: Solve for x
    x = 31,746,868,918.08/159,087.20
  6. Step 6: Final answer
    x = 199,556.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.