Finding the Fourth Proportional to 117,690.24, 162,367.32 and 87,136.08
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Solution
The fourth proportional to 117,690.24, 162,367.32 and 87,136.08 is: 120,214.32
Step by Step Solution
- Step 1: Write the proportion equation
117,690.24 : 162,367.32 = 87,136.08 : x - Step 2: Convert to fraction form
117,690.24/162,367.32 = 87,136.08/x - Step 3: Cross multiply
117,690.24x = 162,367.32 × 87,136.08 - Step 4: Simplify right side
117,690.24x = 14,148,051,784.91 - Step 5: Solve for x
x = 14,148,051,784.91/117,690.24 - Step 6: Final answer
x = 120,214.32
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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.