Finding the Fourth Proportional to 138,474.57, 191,095.74 and 77,224.63
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Solution
The fourth proportional to 138,474.57, 191,095.74 and 77,224.63 is: 106,570.45
Step by Step Solution
- Step 1: Write the proportion equation
138,474.57 : 191,095.74 = 77,224.63 : x - Step 2: Convert to fraction form
138,474.57/191,095.74 = 77,224.63/x - Step 3: Cross multiply
138,474.57x = 191,095.74 × 77,224.63 - Step 4: Simplify right side
138,474.57x = 14,757,297,696.64 - Step 5: Solve for x
x = 14,757,297,696.64/138,474.57 - Step 6: Final answer
x = 106,570.45
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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.