Finding the Fourth Proportional to 137,038.26, 189,114.19 and 76,612.26
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Solution
The fourth proportional to 137,038.26, 189,114.19 and 76,612.26 is: 105,725.69
Step by Step Solution
- Step 1: Write the proportion equation
137,038.26 : 189,114.19 = 76,612.26 : x - Step 2: Convert to fraction form
137,038.26/189,114.19 = 76,612.26/x - Step 3: Cross multiply
137,038.26x = 189,114.19 × 76,612.26 - Step 4: Simplify right side
137,038.26x = 14,488,464,548.40 - Step 5: Solve for x
x = 14,488,464,548.40/137,038.26 - Step 6: Final answer
x = 105,725.69
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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.