Finding the Fourth Proportional to 137,718.06, 190,054.69 and 77,292.44
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Solution
The fourth proportional to 137,718.06, 190,054.69 and 77,292.44 is: 106,665.68
Step by Step Solution
- Step 1: Write the proportion equation
137,718.06 : 190,054.69 = 77,292.44 : x - Step 2: Convert to fraction form
137,718.06/190,054.69 = 77,292.44/x - Step 3: Cross multiply
137,718.06x = 190,054.69 × 77,292.44 - Step 4: Simplify right side
137,718.06x = 14,689,790,337.08 - Step 5: Solve for x
x = 14,689,790,337.08/137,718.06 - Step 6: Final answer
x = 106,665.68
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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.