Finding the Fourth Proportional to 128,083,101.46, 176,752,569.99 and 69,345,296.98
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Solution
The fourth proportional to 128,083,101.46, 176,752,569.99 and 69,345,296.98 is: 95,695,367.45
Step by Step Solution
- Step 1: Write the proportion equation
128,083,101.46 : 176,752,569.99 = 69,345,296.98 : x - Step 2: Convert to fraction form
128,083,101.46/176,752,569.99 = 69,345,296.98/x - Step 3: Cross multiply
128,083,101.46x = 176,752,569.99 × 69,345,296.98 - Step 4: Simplify right side
128,083,101.46x = 12,256,959,457,752,950 - Step 5: Solve for x
x = 12,256,959,457,752,950/128,083,101.46 - Step 6: Final answer
x = 95,695,367.45
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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.