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Finding the Fourth Proportional to 122,765.10, 172,337.70 and 122,765.10

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Solution

The fourth proportional to 122,765.10, 172,337.70 and 122,765.10 is: 172,337.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,765.10 : 172,337.70 = 122,765.10 : x
  2. Step 2: Convert to fraction form
    122,765.10/172,337.70 = 122,765.10/x
  3. Step 3: Cross multiply
    122,765.10x = 172,337.70 × 122,765.10
  4. Step 4: Simplify right side
    122,765.10x = 21,157,054,974.27
  5. Step 5: Solve for x
    x = 21,157,054,974.27/122,765.10
  6. Step 6: Final answer
    x = 172,337.70

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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.