Home / 123,699.36-170,705.22-69,983.28

Finding the Fourth Proportional to 123,699.36, 170,705.22 and 69,983.28

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Solution

The fourth proportional to 123,699.36, 170,705.22 and 69,983.28 is: 96,576.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,699.36 : 170,705.22 = 69,983.28 : x
  2. Step 2: Convert to fraction form
    123,699.36/170,705.22 = 69,983.28/x
  3. Step 3: Cross multiply
    123,699.36x = 170,705.22 × 69,983.28
  4. Step 4: Simplify right side
    123,699.36x = 11,946,511,208.72
  5. Step 5: Solve for x
    x = 11,946,511,208.72/123,699.36
  6. Step 6: Final answer
    x = 96,576.98

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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.