Finding the Fourth Proportional to 139,926.57, 193,098.73 and 79,497.31
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Solution
The fourth proportional to 139,926.57, 193,098.73 and 79,497.31 is: 109,706.32
Step by Step Solution
- Step 1: Write the proportion equation
139,926.57 : 193,098.73 = 79,497.31 : x - Step 2: Convert to fraction form
139,926.57/193,098.73 = 79,497.31/x - Step 3: Cross multiply
139,926.57x = 193,098.73 × 79,497.31 - Step 4: Simplify right side
139,926.57x = 15,350,829,599.42 - Step 5: Solve for x
x = 15,350,829,599.42/139,926.57 - Step 6: Final answer
x = 109,706.32
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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.