Finding the Fourth Proportional to 112,218.13, 168,326.99 and 65,438.20
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Solution
The fourth proportional to 112,218.13, 168,326.99 and 65,438.20 is: 98,157.17
Step by Step Solution
- Step 1: Write the proportion equation
112,218.13 : 168,326.99 = 65,438.20 : x - Step 2: Convert to fraction form
112,218.13/168,326.99 = 65,438.20/x - Step 3: Cross multiply
112,218.13x = 168,326.99 × 65,438.20 - Step 4: Simplify right side
112,218.13x = 11,015,014,068.19 - Step 5: Solve for x
x = 11,015,014,068.19/112,218.13 - Step 6: Final answer
x = 98,157.17
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.