Finding the Fourth Proportional to 144,292,391.55, 199,118,165.76 and 78,211,471.07
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Solution
The fourth proportional to 144,292,391.55, 199,118,165.76 and 78,211,471.07 is: 107,928,938.55
Step by Step Solution
- Step 1: Write the proportion equation
144,292,391.55 : 199,118,165.76 = 78,211,471.07 : x - Step 2: Convert to fraction form
144,292,391.55/199,118,165.76 = 78,211,471.07/x - Step 3: Cross multiply
144,292,391.55x = 199,118,165.76 × 78,211,471.07 - Step 4: Simplify right side
144,292,391.55x = 15,573,324,660,227,458 - Step 5: Solve for x
x = 15,573,324,660,227,458/144,292,391.55 - Step 6: Final answer
x = 107,928,938.55
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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.