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Finding the Fourth Proportional to 122,255.73, 168,712.77 and 68,540.76

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Solution

The fourth proportional to 122,255.73, 168,712.77 and 68,540.76 is: 94,586.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,255.73 : 168,712.77 = 68,540.76 : x
  2. Step 2: Convert to fraction form
    122,255.73/168,712.77 = 68,540.76/x
  3. Step 3: Cross multiply
    122,255.73x = 168,712.77 × 68,540.76
  4. Step 4: Simplify right side
    122,255.73x = 11,563,701,477.51
  5. Step 5: Solve for x
    x = 11,563,701,477.51/122,255.73
  6. Step 6: Final answer
    x = 94,586.17

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1.5x scale

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.