Finding the Fourth Proportional to 121,190,689.84, 167,243,339.12 and 68,979,724.96
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Solution
The fourth proportional to 121,190,689.84, 167,243,339.12 and 68,979,724.96 is: 95,192,126.96
Step by Step Solution
- Step 1: Write the proportion equation
121,190,689.84 : 167,243,339.12 = 68,979,724.96 : x - Step 2: Convert to fraction form
121,190,689.84/167,243,339.12 = 68,979,724.96/x - Step 3: Cross multiply
121,190,689.84x = 167,243,339.12 × 68,979,724.96 - Step 4: Simplify right side
121,190,689.84x = 11,536,399,533,889,608 - Step 5: Solve for x
x = 11,536,399,533,889,608/121,190,689.84 - Step 6: Final answer
x = 95,192,126.96
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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.