Finding the Fourth Proportional to 144,612,618.87, 216,706,296.55 and 85,464,121.31
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Solution
The fourth proportional to 144,612,618.87, 216,706,296.55 and 85,464,121.31 is: 128,070,519.45
Step by Step Solution
- Step 1: Write the proportion equation
144,612,618.87 : 216,706,296.55 = 85,464,121.31 : x - Step 2: Convert to fraction form
144,612,618.87/216,706,296.55 = 85,464,121.31/x - Step 3: Cross multiply
144,612,618.87x = 216,706,296.55 × 85,464,121.31 - Step 4: Simplify right side
144,612,618.87x = 18,520,613,216,990,036 - Step 5: Solve for x
x = 18,520,613,216,990,036/144,612,618.87 - Step 6: Final answer
x = 128,070,519.45
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.