Home / 136,705.89-188,578.31-80,106.33

Finding the Fourth Proportional to 136,705.89, 188,578.31 and 80,106.33

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Solution

The fourth proportional to 136,705.89, 188,578.31 and 80,106.33 is: 110,502.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,705.89 : 188,578.31 = 80,106.33 : x
  2. Step 2: Convert to fraction form
    136,705.89/188,578.31 = 80,106.33/x
  3. Step 3: Cross multiply
    136,705.89x = 188,578.31 × 80,106.33
  4. Step 4: Simplify right side
    136,705.89x = 15,106,316,331.70
  5. Step 5: Solve for x
    x = 15,106,316,331.70/136,705.89
  6. Step 6: Final answer
    x = 110,502.31

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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.