Finding the Fourth Proportional to 122,045.76, 168,336.18 and 112,006.62
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Solution
The fourth proportional to 122,045.76, 168,336.18 and 112,006.62 is: 154,489.32
Step by Step Solution
- Step 1: Write the proportion equation
122,045.76 : 168,336.18 = 112,006.62 : x - Step 2: Convert to fraction form
122,045.76/168,336.18 = 112,006.62/x - Step 3: Cross multiply
122,045.76x = 168,336.18 × 112,006.62 - Step 4: Simplify right side
122,045.76x = 18,854,766,545.51 - Step 5: Solve for x
x = 18,854,766,545.51/122,045.76 - Step 6: Final answer
x = 154,489.32
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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.