Finding the Fourth Proportional to 122,425.40, 168,925.72 and 68,712.68
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Solution
The fourth proportional to 122,425.40, 168,925.72 and 68,712.68 is: 94,811.53
Step by Step Solution
- Step 1: Write the proportion equation
122,425.40 : 168,925.72 = 68,712.68 : x - Step 2: Convert to fraction form
122,425.40/168,925.72 = 68,712.68/x - Step 3: Cross multiply
122,425.40x = 168,925.72 × 68,712.68 - Step 4: Simplify right side
122,425.40x = 11,607,338,942.13 - Step 5: Solve for x
x = 11,607,338,942.13/122,425.40 - Step 6: Final answer
x = 94,811.53
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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.