Finding the Fourth Proportional to 117,555.48, 162,276.21 and 79,366.74
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Solution
The fourth proportional to 117,555.48, 162,276.21 and 79,366.74 is: 109,559.62
Step by Step Solution
- Step 1: Write the proportion equation
117,555.48 : 162,276.21 = 79,366.74 : x - Step 2: Convert to fraction form
117,555.48/162,276.21 = 79,366.74/x - Step 3: Cross multiply
117,555.48x = 162,276.21 × 79,366.74 - Step 4: Simplify right side
117,555.48x = 12,879,333,767.26 - Step 5: Solve for x
x = 12,879,333,767.26/117,555.48 - Step 6: Final answer
x = 109,559.62
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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.