Finding the Fourth Proportional to 122,228.96, 168,683.76 and 68,513.99
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Solution
The fourth proportional to 122,228.96, 168,683.76 and 68,513.99 is: 94,553.68
Step by Step Solution
- Step 1: Write the proportion equation
122,228.96 : 168,683.76 = 68,513.99 : x - Step 2: Convert to fraction form
122,228.96/168,683.76 = 68,513.99/x - Step 3: Cross multiply
122,228.96x = 168,683.76 × 68,513.99 - Step 4: Simplify right side
122,228.96x = 11,557,197,445.80 - Step 5: Solve for x
x = 11,557,197,445.80/122,228.96 - Step 6: Final answer
x = 94,553.68
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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.