Finding the Fourth Proportional to 139,916.57, 193,090.08 and 79,497.46
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Solution
The fourth proportional to 139,916.57, 193,090.08 and 79,497.46 is: 109,709.45
Step by Step Solution
- Step 1: Write the proportion equation
139,916.57 : 193,090.08 = 79,497.46 : x - Step 2: Convert to fraction form
139,916.57/193,090.08 = 79,497.46/x - Step 3: Cross multiply
139,916.57x = 193,090.08 × 79,497.46 - Step 4: Simplify right side
139,916.57x = 15,350,169,548.26 - Step 5: Solve for x
x = 15,350,169,548.26/139,916.57 - Step 6: Final answer
x = 109,709.45
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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.