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Finding the Fourth Proportional to 100,533.96, 138,659.98 and 68,293.44

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Solution

The fourth proportional to 100,533.96, 138,659.98 and 68,293.44 is: 94,192.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,533.96 : 138,659.98 = 68,293.44 : x
  2. Step 2: Convert to fraction form
    100,533.96/138,659.98 = 68,293.44/x
  3. Step 3: Cross multiply
    100,533.96x = 138,659.98 × 68,293.44
  4. Step 4: Simplify right side
    100,533.96x = 9,469,567,024.53
  5. Step 5: Solve for x
    x = 9,469,567,024.53/100,533.96
  6. Step 6: Final answer
    x = 94,192.72

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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.