Finding the Fourth Proportional to 122,125.39, 168,534.79 and 71,136.81
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Solution
The fourth proportional to 122,125.39, 168,534.79 and 71,136.81 is: 98,169.82
Step by Step Solution
- Step 1: Write the proportion equation
122,125.39 : 168,534.79 = 71,136.81 : x - Step 2: Convert to fraction form
122,125.39/168,534.79 = 71,136.81/x - Step 3: Cross multiply
122,125.39x = 168,534.79 × 71,136.81 - Step 4: Simplify right side
122,125.39x = 11,989,027,156.78 - Step 5: Solve for x
x = 11,989,027,156.78/122,125.39 - Step 6: Final answer
x = 98,169.82
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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.