Finding the Fourth Proportional to 208,124,987.85, 312,083,601.98 and 68,047,197.75
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Solution
The fourth proportional to 208,124,987.85, 312,083,601.98 and 68,047,197.75 is: 102,036,832.76
Step by Step Solution
- Step 1: Write the proportion equation
208,124,987.85 : 312,083,601.98 = 68,047,197.75 : x - Step 2: Convert to fraction form
208,124,987.85/312,083,601.98 = 68,047,197.75/x - Step 3: Cross multiply
208,124,987.85x = 312,083,601.98 × 68,047,197.75 - Step 4: Simplify right side
208,124,987.85x = 21,236,414,578,125,116 - Step 5: Solve for x
x = 21,236,414,578,125,116/208,124,987.85 - Step 6: Final answer
x = 102,036,832.76
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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.