Finding the Fourth Proportional to 115,092.19, 158,893.11 and 76,916.42
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Solution
The fourth proportional to 115,092.19, 158,893.11 and 76,916.42 is: 106,188.69
Step by Step Solution
- Step 1: Write the proportion equation
115,092.19 : 158,893.11 = 76,916.42 : x - Step 2: Convert to fraction form
115,092.19/158,893.11 = 76,916.42/x - Step 3: Cross multiply
115,092.19x = 158,893.11 × 76,916.42 - Step 4: Simplify right side
115,092.19x = 12,221,488,985.25 - Step 5: Solve for x
x = 12,221,488,985.25/115,092.19 - Step 6: Final answer
x = 106,188.69
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1.5x scale
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.