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Finding the Fourth Proportional to 122,232, 168,680.40 and 69,240

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Solution

The fourth proportional to 122,232, 168,680.40 and 69,240 is: 95,551.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,232 : 168,680.40 = 69,240 : x
  2. Step 2: Convert to fraction form
    122,232/168,680.40 = 69,240/x
  3. Step 3: Cross multiply
    122,232x = 168,680.40 × 69,240
  4. Step 4: Simplify right side
    122,232x = 11,679,430,896
  5. Step 5: Solve for x
    x = 11,679,430,896/122,232
  6. Step 6: Final answer
    x = 95,551.34

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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.