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Finding the Fourth Proportional to 122,515.10, 171,696.10 and 122,515.10

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Solution

The fourth proportional to 122,515.10, 171,696.10 and 122,515.10 is: 171,696.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,515.10 : 171,696.10 = 122,515.10 : x
  2. Step 2: Convert to fraction form
    122,515.10/171,696.10 = 122,515.10/x
  3. Step 3: Cross multiply
    122,515.10x = 171,696.10 × 122,515.10
  4. Step 4: Simplify right side
    122,515.10x = 21,035,364,861.11
  5. Step 5: Solve for x
    x = 21,035,364,861.11/122,515.10
  6. Step 6: Final answer
    x = 171,696.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.