Finding the Fourth Proportional to 122,773.08, 169,428.60 and 72,472.08
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Solution
The fourth proportional to 122,773.08, 169,428.60 and 72,472.08 is: 100,012.50
Step by Step Solution
- Step 1: Write the proportion equation
122,773.08 : 169,428.60 = 72,472.08 : x - Step 2: Convert to fraction form
122,773.08/169,428.60 = 72,472.08/x - Step 3: Cross multiply
122,773.08x = 169,428.60 × 72,472.08 - Step 4: Simplify right side
122,773.08x = 12,278,843,053.49 - Step 5: Solve for x
x = 12,278,843,053.49/122,773.08 - Step 6: Final answer
x = 100,012.50
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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.