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Finding the Fourth Proportional to 122,956.30, 172,372.10 and 122,956.30

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Solution

The fourth proportional to 122,956.30, 172,372.10 and 122,956.30 is: 172,372.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,956.30 : 172,372.10 = 122,956.30 : x
  2. Step 2: Convert to fraction form
    122,956.30/172,372.10 = 122,956.30/x
  3. Step 3: Cross multiply
    122,956.30x = 172,372.10 × 122,956.30
  4. Step 4: Simplify right side
    122,956.30x = 21,194,235,639.23
  5. Step 5: Solve for x
    x = 21,194,235,639.23/122,956.30
  6. Step 6: Final answer
    x = 172,372.10

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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.