Finding the Fourth Proportional to 121,457.68, 167,547.88 and 98,821.96
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Solution
The fourth proportional to 121,457.68, 167,547.88 and 98,821.96 is: 136,322.46
Step by Step Solution
- Step 1: Write the proportion equation
121,457.68 : 167,547.88 = 98,821.96 : x - Step 2: Convert to fraction form
121,457.68/167,547.88 = 98,821.96/x - Step 3: Cross multiply
121,457.68x = 167,547.88 × 98,821.96 - Step 4: Simplify right side
121,457.68x = 16,557,409,895.44 - Step 5: Solve for x
x = 16,557,409,895.44/121,457.68 - Step 6: Final answer
x = 136,322.46
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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.