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Finding the Fourth Proportional to 122,191, 183,328.08 and 68,818.48

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Solution

The fourth proportional to 122,191, 183,328.08 and 68,818.48 is: 103,251.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,191 : 183,328.08 = 68,818.48 : x
  2. Step 2: Convert to fraction form
    122,191/183,328.08 = 68,818.48/x
  3. Step 3: Cross multiply
    122,191x = 183,328.08 × 68,818.48
  4. Step 4: Simplify right side
    122,191x = 12,616,359,806.92
  5. Step 5: Solve for x
    x = 12,616,359,806.92/122,191
  6. Step 6: Final answer
    x = 103,251.14

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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.