Finding the Fourth Proportional to 117,878.86, 162,676.38 and 72,582.99
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Solution
The fourth proportional to 117,878.86, 162,676.38 and 72,582.99 is: 100,166.71
Step by Step Solution
- Step 1: Write the proportion equation
117,878.86 : 162,676.38 = 72,582.99 : x - Step 2: Convert to fraction form
117,878.86/162,676.38 = 72,582.99/x - Step 3: Cross multiply
117,878.86x = 162,676.38 × 72,582.99 - Step 4: Simplify right side
117,878.86x = 11,807,538,062.78 - Step 5: Solve for x
x = 11,807,538,062.78/117,878.86 - Step 6: Final answer
x = 100,166.71
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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.