Finding the Fourth Proportional to 136,823.97, 188,815.26 and 76,395.63
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Solution
The fourth proportional to 136,823.97, 188,815.26 and 76,395.63 is: 105,424.95
Step by Step Solution
- Step 1: Write the proportion equation
136,823.97 : 188,815.26 = 76,395.63 : x - Step 2: Convert to fraction form
136,823.97/188,815.26 = 76,395.63/x - Step 3: Cross multiply
136,823.97x = 188,815.26 × 76,395.63 - Step 4: Simplify right side
136,823.97x = 14,424,660,741.31 - Step 5: Solve for x
x = 14,424,660,741.31/136,823.97 - Step 6: Final answer
x = 105,424.95
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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.