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Finding the Fourth Proportional to 122,205.52, 168,643.39 and 68,490.52

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Solution

The fourth proportional to 122,205.52, 168,643.39 and 68,490.52 is: 94,516.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,205.52 : 168,643.39 = 68,490.52 : x
  2. Step 2: Convert to fraction form
    122,205.52/168,643.39 = 68,490.52/x
  3. Step 3: Cross multiply
    122,205.52x = 168,643.39 × 68,490.52
  4. Step 4: Simplify right side
    122,205.52x = 11,550,473,678.19
  5. Step 5: Solve for x
    x = 11,550,473,678.19/122,205.52
  6. Step 6: Final answer
    x = 94,516.79

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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.