Finding the Fourth Proportional to 128,178,477.30, 192,267,718.14 and 31,133,530.95
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Solution
The fourth proportional to 128,178,477.30, 192,267,718.14 and 31,133,530.95 is: 46,700,296.96
Step by Step Solution
- Step 1: Write the proportion equation
128,178,477.30 : 192,267,718.14 = 31,133,530.95 : x - Step 2: Convert to fraction form
128,178,477.30/192,267,718.14 = 31,133,530.95/x - Step 3: Cross multiply
128,178,477.30x = 192,267,718.14 × 31,133,530.95 - Step 4: Simplify right side
128,178,477.30x = 5,985,972,953,397,566 - Step 5: Solve for x
x = 5,985,972,953,397,566/128,178,477.30 - Step 6: Final answer
x = 46,700,296.96
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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.