Finding the Fourth Proportional to 144,518,328.06, 199,435,511.88 and 78,438,850.44
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Solution
The fourth proportional to 144,518,328.06, 199,435,511.88 and 78,438,850.44 is: 108,245,732.56
Step by Step Solution
- Step 1: Write the proportion equation
144,518,328.06 : 199,435,511.88 = 78,438,850.44 : x - Step 2: Convert to fraction form
144,518,328.06/199,435,511.88 = 78,438,850.44/x - Step 3: Cross multiply
144,518,328.06x = 199,435,511.88 × 78,438,850.44 - Step 4: Simplify right side
144,518,328.06x = 15,643,492,288,780,162 - Step 5: Solve for x
x = 15,643,492,288,780,162/144,518,328.06 - Step 6: Final answer
x = 108,245,732.56
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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.