Finding the Fourth Proportional to 128,517,113.99, 192,803,326.44 and 39,883,934.13
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Solution
The fourth proportional to 128,517,113.99, 192,803,326.44 and 39,883,934.13 is: 59,834,483.78
Step by Step Solution
- Step 1: Write the proportion equation
128,517,113.99 : 192,803,326.44 = 39,883,934.13 : x - Step 2: Convert to fraction form
128,517,113.99/192,803,326.44 = 39,883,934.13/x - Step 3: Cross multiply
128,517,113.99x = 192,803,326.44 × 39,883,934.13 - Step 4: Simplify right side
128,517,113.99x = 7,689,755,171,777,848 - Step 5: Solve for x
x = 7,689,755,171,777,848/128,517,113.99 - Step 6: Final answer
x = 59,834,483.78
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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.