Finding the Fourth Proportional to 102,690.11, 141,710.78 and 57,368.75
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Solution
The fourth proportional to 102,690.11, 141,710.78 and 57,368.75 is: 79,167.99
Step by Step Solution
- Step 1: Write the proportion equation
102,690.11 : 141,710.78 = 57,368.75 : x - Step 2: Convert to fraction form
102,690.11/141,710.78 = 57,368.75/x - Step 3: Cross multiply
102,690.11x = 141,710.78 × 57,368.75 - Step 4: Simplify right side
102,690.11x = 8,129,769,314.73 - Step 5: Solve for x
x = 8,129,769,314.73/102,690.11 - Step 6: Final answer
x = 79,167.99
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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.