Finding the Fourth Proportional to 136,827.42, 188,717.93 and 117,739.18
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Solution
The fourth proportional to 136,827.42, 188,717.93 and 117,739.18 is: 162,390.66
Step by Step Solution
- Step 1: Write the proportion equation
136,827.42 : 188,717.93 = 117,739.18 : x - Step 2: Convert to fraction form
136,827.42/188,717.93 = 117,739.18/x - Step 3: Cross multiply
136,827.42x = 188,717.93 × 117,739.18 - Step 4: Simplify right side
136,827.42x = 22,219,495,097.53 - Step 5: Solve for x
x = 22,219,495,097.53/136,827.42 - Step 6: Final answer
x = 162,390.66
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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.