Finding the Fourth Proportional to 121,420.44, 167,547.42 and 67,695.30
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Solution
The fourth proportional to 121,420.44, 167,547.42 and 67,695.30 is: 93,412.38
Step by Step Solution
- Step 1: Write the proportion equation
121,420.44 : 167,547.42 = 67,695.30 : x - Step 2: Convert to fraction form
121,420.44/167,547.42 = 67,695.30/x - Step 3: Cross multiply
121,420.44x = 167,547.42 × 67,695.30 - Step 4: Simplify right side
121,420.44x = 11,342,172,861.13 - Step 5: Solve for x
x = 11,342,172,861.13/121,420.44 - Step 6: Final answer
x = 93,412.38
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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.