Finding the Fourth Proportional to 137,010.12, 189,132.26 and 83,312.38
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Solution
The fourth proportional to 137,010.12, 189,132.26 and 83,312.38 is: 115,006.53
Step by Step Solution
- Step 1: Write the proportion equation
137,010.12 : 189,132.26 = 83,312.38 : x - Step 2: Convert to fraction form
137,010.12/189,132.26 = 83,312.38/x - Step 3: Cross multiply
137,010.12x = 189,132.26 × 83,312.38 - Step 4: Simplify right side
137,010.12x = 15,757,058,715.38 - Step 5: Solve for x
x = 15,757,058,715.38/137,010.12 - Step 6: Final answer
x = 115,006.53
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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.