Finding the Fourth Proportional to 137,811.93, 190,201.11 and 84,128.07
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Solution
The fourth proportional to 137,811.93, 190,201.11 and 84,128.07 is: 116,109.34
Step by Step Solution
- Step 1: Write the proportion equation
137,811.93 : 190,201.11 = 84,128.07 : x - Step 2: Convert to fraction form
137,811.93/190,201.11 = 84,128.07/x - Step 3: Cross multiply
137,811.93x = 190,201.11 × 84,128.07 - Step 4: Simplify right side
137,811.93x = 16,001,252,296.16 - Step 5: Solve for x
x = 16,001,252,296.16/137,811.93 - Step 6: Final answer
x = 116,109.34
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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.