Finding the Fourth Proportional to 159,909.64, 220,678.74 and 88,294.19
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Solution
The fourth proportional to 159,909.64, 220,678.74 and 88,294.19 is: 121,847.87
Step by Step Solution
- Step 1: Write the proportion equation
159,909.64 : 220,678.74 = 88,294.19 : x - Step 2: Convert to fraction form
159,909.64/220,678.74 = 88,294.19/x - Step 3: Cross multiply
159,909.64x = 220,678.74 × 88,294.19 - Step 4: Simplify right side
159,909.64x = 19,484,649,495.13 - Step 5: Solve for x
x = 19,484,649,495.13/159,909.64 - Step 6: Final answer
x = 121,847.87
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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.