Home / 137,983.23-190,418.55-77,550.33

Finding the Fourth Proportional to 137,983.23, 190,418.55 and 77,550.33

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Solution

The fourth proportional to 137,983.23, 190,418.55 and 77,550.33 is: 107,020.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,983.23 : 190,418.55 = 77,550.33 : x
  2. Step 2: Convert to fraction form
    137,983.23/190,418.55 = 77,550.33/x
  3. Step 3: Cross multiply
    137,983.23x = 190,418.55 × 77,550.33
  4. Step 4: Simplify right side
    137,983.23x = 14,767,021,390.62
  5. Step 5: Solve for x
    x = 14,767,021,390.62/137,983.23
  6. Step 6: Final answer
    x = 107,020.41

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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.