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Finding the Fourth Proportional to 123,678.54, 170,676.45 and 69,962.43

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Solution

The fourth proportional to 123,678.54, 170,676.45 and 69,962.43 is: 96,548.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,678.54 : 170,676.45 = 69,962.43 : x
  2. Step 2: Convert to fraction form
    123,678.54/170,676.45 = 69,962.43/x
  3. Step 3: Cross multiply
    123,678.54x = 170,676.45 × 69,962.43
  4. Step 4: Simplify right side
    123,678.54x = 11,940,939,185.77
  5. Step 5: Solve for x
    x = 11,940,939,185.77/123,678.54
  6. Step 6: Final answer
    x = 96,548.19

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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.