Finding the Fourth Proportional to 103,195.33, 142,415.77 and 57,875.99
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Solution
The fourth proportional to 103,195.33, 142,415.77 and 57,875.99 is: 79,872.35
Step by Step Solution
- Step 1: Write the proportion equation
103,195.33 : 142,415.77 = 57,875.99 : x - Step 2: Convert to fraction form
103,195.33/142,415.77 = 57,875.99/x - Step 3: Cross multiply
103,195.33x = 142,415.77 × 57,875.99 - Step 4: Simplify right side
103,195.33x = 8,242,453,741.77 - Step 5: Solve for x
x = 8,242,453,741.77/103,195.33 - Step 6: Final answer
x = 79,872.35
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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.