Finding the Fourth Proportional to 79,204.74, 118,511.82 and 78,318.96
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Solution
The fourth proportional to 79,204.74, 118,511.82 and 78,318.96 is: 117,186.45
Step by Step Solution
- Step 1: Write the proportion equation
79,204.74 : 118,511.82 = 78,318.96 : x - Step 2: Convert to fraction form
79,204.74/118,511.82 = 78,318.96/x - Step 3: Cross multiply
79,204.74x = 118,511.82 × 78,318.96 - Step 4: Simplify right side
79,204.74x = 9,281,722,490.11 - Step 5: Solve for x
x = 9,281,722,490.11/79,204.74 - Step 6: Final answer
x = 117,186.45
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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.