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Finding the Fourth Proportional to 192,554.39, 288,656.62 and 87,315.95

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Solution

The fourth proportional to 192,554.39, 288,656.62 and 87,315.95 is: 130,894.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,554.39 : 288,656.62 = 87,315.95 : x
  2. Step 2: Convert to fraction form
    192,554.39/288,656.62 = 87,315.95/x
  3. Step 3: Cross multiply
    192,554.39x = 288,656.62 × 87,315.95
  4. Step 4: Simplify right side
    192,554.39x = 25,204,325,337.52
  5. Step 5: Solve for x
    x = 25,204,325,337.52/192,554.39
  6. Step 6: Final answer
    x = 130,894.58

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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.