Finding the Fourth Proportional to 136,678,312.80, 188,613,552.24 and 74,797,410.24
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Solution
The fourth proportional to 136,678,312.80, 188,613,552.24 and 74,797,410.24 is: 103,219,047.37
Step by Step Solution
- Step 1: Write the proportion equation
136,678,312.80 : 188,613,552.24 = 74,797,410.24 : x - Step 2: Convert to fraction form
136,678,312.80/188,613,552.24 = 74,797,410.24/x - Step 3: Cross multiply
136,678,312.80x = 188,613,552.24 × 74,797,410.24 - Step 4: Simplify right side
136,678,312.80x = 14,107,805,243,718,950 - Step 5: Solve for x
x = 14,107,805,243,718,950/136,678,312.80 - Step 6: Final answer
x = 103,219,047.37
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1.5x scale
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.