Finding the Fourth Proportional to 122,148,187.05, 168,565,626.96 and 66,393,738.54
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Solution
The fourth proportional to 122,148,187.05, 168,565,626.96 and 66,393,738.54 is: 91,623,972.76
Step by Step Solution
- Step 1: Write the proportion equation
122,148,187.05 : 168,565,626.96 = 66,393,738.54 : x - Step 2: Convert to fraction form
122,148,187.05/168,565,626.96 = 66,393,738.54/x - Step 3: Cross multiply
122,148,187.05x = 168,565,626.96 × 66,393,738.54 - Step 4: Simplify right side
122,148,187.05x = 11,191,702,163,213,416 - Step 5: Solve for x
x = 11,191,702,163,213,416/122,148,187.05 - Step 6: Final answer
x = 91,623,972.76
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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.