Home / 136,683.72-188,708.94-104,791.32

Finding the Fourth Proportional to 136,683.72, 188,708.94 and 104,791.32

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Solution

The fourth proportional to 136,683.72, 188,708.94 and 104,791.32 is: 144,677.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,683.72 : 188,708.94 = 104,791.32 : x
  2. Step 2: Convert to fraction form
    136,683.72/188,708.94 = 104,791.32/x
  3. Step 3: Cross multiply
    136,683.72x = 188,708.94 × 104,791.32
  4. Step 4: Simplify right side
    136,683.72x = 19,775,058,918.40
  5. Step 5: Solve for x
    x = 19,775,058,918.40/136,683.72
  6. Step 6: Final answer
    x = 144,677.50

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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.