Finding the Fourth Proportional to 137,812.93, 190,202.49 and 84,129.07
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Solution
The fourth proportional to 137,812.93, 190,202.49 and 84,129.07 is: 116,110.72
Step by Step Solution
- Step 1: Write the proportion equation
137,812.93 : 190,202.49 = 84,129.07 : x - Step 2: Convert to fraction form
137,812.93/190,202.49 = 84,129.07/x - Step 3: Cross multiply
137,812.93x = 190,202.49 × 84,129.07 - Step 4: Simplify right side
137,812.93x = 16,001,558,595.38 - Step 5: Solve for x
x = 16,001,558,595.38/137,812.93 - Step 6: Final answer
x = 116,110.72
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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.