Finding the Fourth Proportional to 122,136.48, 168,516.88 and 71,826.08
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Solution
The fourth proportional to 122,136.48, 168,516.88 and 71,826.08 is: 99,101.49
Step by Step Solution
- Step 1: Write the proportion equation
122,136.48 : 168,516.88 = 71,826.08 : x - Step 2: Convert to fraction form
122,136.48/168,516.88 = 71,826.08/x - Step 3: Cross multiply
122,136.48x = 168,516.88 × 71,826.08 - Step 4: Simplify right side
122,136.48x = 12,103,906,904.23 - Step 5: Solve for x
x = 12,103,906,904.23/122,136.48 - Step 6: Final answer
x = 99,101.49
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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.