Home / 123,003.66-169,680.39-77,665.26

Finding the Fourth Proportional to 123,003.66, 169,680.39 and 77,665.26

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Solution

The fourth proportional to 123,003.66, 169,680.39 and 77,665.26 is: 107,137.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,003.66 : 169,680.39 = 77,665.26 : x
  2. Step 2: Convert to fraction form
    123,003.66/169,680.39 = 77,665.26/x
  3. Step 3: Cross multiply
    123,003.66x = 169,680.39 × 77,665.26
  4. Step 4: Simplify right side
    123,003.66x = 13,178,271,606.25
  5. Step 5: Solve for x
    x = 13,178,271,606.25/123,003.66
  6. Step 6: Final answer
    x = 107,137.23

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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.