Finding the Fourth Proportional to 139,157.62, 207,062.58 and 138,691.06
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Solution
The fourth proportional to 139,157.62, 207,062.58 and 138,691.06 is: 206,368.35
Step by Step Solution
- Step 1: Write the proportion equation
139,157.62 : 207,062.58 = 138,691.06 : x - Step 2: Convert to fraction form
139,157.62/207,062.58 = 138,691.06/x - Step 3: Cross multiply
139,157.62x = 207,062.58 × 138,691.06 - Step 4: Simplify right side
139,157.62x = 28,717,728,706.53 - Step 5: Solve for x
x = 28,717,728,706.53/139,157.62 - Step 6: Final answer
x = 206,368.35
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.