Finding the Fourth Proportional to 105,858.90, 158,705.19 and 72,477.99
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Solution
The fourth proportional to 105,858.90, 158,705.19 and 72,477.99 is: 108,660.05
Step by Step Solution
- Step 1: Write the proportion equation
105,858.90 : 158,705.19 = 72,477.99 : x - Step 2: Convert to fraction form
105,858.90/158,705.19 = 72,477.99/x - Step 3: Cross multiply
105,858.90x = 158,705.19 × 72,477.99 - Step 4: Simplify right side
105,858.90x = 11,502,633,173.77 - Step 5: Solve for x
x = 11,502,633,173.77/105,858.90 - Step 6: Final answer
x = 108,660.05
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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.