Finding the Fourth Proportional to 199,718.16, 275,142.26 and 139,178.76
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Solution
The fourth proportional to 199,718.16, 275,142.26 and 139,178.76 is: 191,739.99
Step by Step Solution
- Step 1: Write the proportion equation
199,718.16 : 275,142.26 = 139,178.76 : x - Step 2: Convert to fraction form
199,718.16/275,142.26 = 139,178.76/x - Step 3: Cross multiply
199,718.16x = 275,142.26 × 139,178.76 - Step 4: Simplify right side
199,718.16x = 38,293,958,570.40 - Step 5: Solve for x
x = 38,293,958,570.40/199,718.16 - Step 6: Final answer
x = 191,739.99
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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.