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Finding the Fourth Proportional to 122,272.31, 168,733.62 and 68,557.16

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Solution

The fourth proportional to 122,272.31, 168,733.62 and 68,557.16 is: 94,607.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,272.31 : 168,733.62 = 68,557.16 : x
  2. Step 2: Convert to fraction form
    122,272.31/168,733.62 = 68,557.16/x
  3. Step 3: Cross multiply
    122,272.31x = 168,733.62 × 68,557.16
  4. Step 4: Simplify right side
    122,272.31x = 11,567,896,940.05
  5. Step 5: Solve for x
    x = 11,567,896,940.05/122,272.31
  6. Step 6: Final answer
    x = 94,607.66

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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.