Finding the Fourth Proportional to 159,513.90, 220,138.99 and 87,893.90
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Solution
The fourth proportional to 159,513.90, 220,138.99 and 87,893.90 is: 121,298.99
Step by Step Solution
- Step 1: Write the proportion equation
159,513.90 : 220,138.99 = 87,893.90 : x - Step 2: Convert to fraction form
159,513.90/220,138.99 = 87,893.90/x - Step 3: Cross multiply
159,513.90x = 220,138.99 × 87,893.90 - Step 4: Simplify right side
159,513.90x = 19,348,874,703.77 - Step 5: Solve for x
x = 19,348,874,703.77/159,513.90 - Step 6: Final answer
x = 121,298.99
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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.