Finding the Fourth Proportional to 124,724.81, 172,120.34 and 68,136.19
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Solution
The fourth proportional to 124,724.81, 172,120.34 and 68,136.19 is: 94,027.99
Step by Step Solution
- Step 1: Write the proportion equation
124,724.81 : 172,120.34 = 68,136.19 : x - Step 2: Convert to fraction form
124,724.81/172,120.34 = 68,136.19/x - Step 3: Cross multiply
124,724.81x = 172,120.34 × 68,136.19 - Step 4: Simplify right side
124,724.81x = 11,727,623,929.14 - Step 5: Solve for x
x = 11,727,623,929.14/124,724.81 - Step 6: Final answer
x = 94,027.99
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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.