Home / 123,868.44-170,990.73-83,636.64

Finding the Fourth Proportional to 123,868.44, 170,990.73 and 83,636.64

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Solution

The fourth proportional to 123,868.44, 170,990.73 and 83,636.64 is: 115,453.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,868.44 : 170,990.73 = 83,636.64 : x
  2. Step 2: Convert to fraction form
    123,868.44/170,990.73 = 83,636.64/x
  3. Step 3: Cross multiply
    123,868.44x = 170,990.73 × 83,636.64
  4. Step 4: Simplify right side
    123,868.44x = 14,301,090,128.35
  5. Step 5: Solve for x
    x = 14,301,090,128.35/123,868.44
  6. Step 6: Final answer
    x = 115,453.86

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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.