Finding the Fourth Proportional to 144,292,385.48, 199,118,157.36 and 78,211,464.96
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Solution
The fourth proportional to 144,292,385.48, 199,118,157.36 and 78,211,464.96 is: 107,928,930.11
Step by Step Solution
- Step 1: Write the proportion equation
144,292,385.48 : 199,118,157.36 = 78,211,464.96 : x - Step 2: Convert to fraction form
144,292,385.48/199,118,157.36 = 78,211,464.96/x - Step 3: Cross multiply
144,292,385.48x = 199,118,157.36 × 78,211,464.96 - Step 4: Simplify right side
144,292,385.48x = 15,573,322,787,261,406 - Step 5: Solve for x
x = 15,573,322,787,261,406/144,292,385.48 - Step 6: Final answer
x = 107,928,930.11
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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.