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Finding the Fourth Proportional to 122,424.60, 168,962.44 and 68,712.56

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Solution

The fourth proportional to 122,424.60, 168,962.44 and 68,712.56 is: 94,832.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,424.60 : 168,962.44 = 68,712.56 : x
  2. Step 2: Convert to fraction form
    122,424.60/168,962.44 = 68,712.56/x
  3. Step 3: Cross multiply
    122,424.60x = 168,962.44 × 68,712.56
  4. Step 4: Simplify right side
    122,424.60x = 11,609,841,796.25
  5. Step 5: Solve for x
    x = 11,609,841,796.25/122,424.60
  6. Step 6: Final answer
    x = 94,832.59

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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.