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Finding the Fourth Proportional to 122,906.70, 172,419.30 and 122,906.70

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Solution

The fourth proportional to 122,906.70, 172,419.30 and 122,906.70 is: 172,419.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,906.70 : 172,419.30 = 122,906.70 : x
  2. Step 2: Convert to fraction form
    122,906.70/172,419.30 = 122,906.70/x
  3. Step 3: Cross multiply
    122,906.70x = 172,419.30 × 122,906.70
  4. Step 4: Simplify right side
    122,906.70x = 21,191,487,179.31
  5. Step 5: Solve for x
    x = 21,191,487,179.31/122,906.70
  6. Step 6: Final answer
    x = 172,419.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.