Finding the Fourth Proportional to 122,916.17, 169,640.47 and 69,211.65
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Solution
The fourth proportional to 122,916.17, 169,640.47 and 69,211.65 is: 95,521.17
Step by Step Solution
- Step 1: Write the proportion equation
122,916.17 : 169,640.47 = 69,211.65 : x - Step 2: Convert to fraction form
122,916.17/169,640.47 = 69,211.65/x - Step 3: Cross multiply
122,916.17x = 169,640.47 × 69,211.65 - Step 4: Simplify right side
122,916.17x = 11,741,096,835.48 - Step 5: Solve for x
x = 11,741,096,835.48/122,916.17 - Step 6: Final answer
x = 95,521.17
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1.5x scale
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.