Finding the Fourth Proportional to 157,992.06, 218,029.01 and 86,372.07
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Solution
The fourth proportional to 157,992.06, 218,029.01 and 86,372.07 is: 119,193.44
Step by Step Solution
- Step 1: Write the proportion equation
157,992.06 : 218,029.01 = 86,372.07 : x - Step 2: Convert to fraction form
157,992.06/218,029.01 = 86,372.07/x - Step 3: Cross multiply
157,992.06x = 218,029.01 × 86,372.07 - Step 4: Simplify right side
157,992.06x = 18,831,616,913.75 - Step 5: Solve for x
x = 18,831,616,913.75/157,992.06 - Step 6: Final answer
x = 119,193.44
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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.