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Finding the Fourth Proportional to 100,533.46, 138,659.29 and 68,292.94

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Solution

The fourth proportional to 100,533.46, 138,659.29 and 68,292.94 is: 94,192.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,533.46 : 138,659.29 = 68,292.94 : x
  2. Step 2: Convert to fraction form
    100,533.46/138,659.29 = 68,292.94/x
  3. Step 3: Cross multiply
    100,533.46x = 138,659.29 × 68,292.94
  4. Step 4: Simplify right side
    100,533.46x = 9,469,450,572.41
  5. Step 5: Solve for x
    x = 9,469,450,572.41/100,533.46
  6. Step 6: Final answer
    x = 94,192.03

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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.