Finding the Fourth Proportional to 138,364.08, 190,549.80 and 124,635.18
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Solution
The fourth proportional to 138,364.08, 190,549.80 and 124,635.18 is: 171,642.88
Step by Step Solution
- Step 1: Write the proportion equation
138,364.08 : 190,549.80 = 124,635.18 : x - Step 2: Convert to fraction form
138,364.08/190,549.80 = 124,635.18/x - Step 3: Cross multiply
138,364.08x = 190,549.80 × 124,635.18 - Step 4: Simplify right side
138,364.08x = 23,749,208,621.96 - Step 5: Solve for x
x = 23,749,208,621.96/138,364.08 - Step 6: Final answer
x = 171,642.88
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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.