Finding the Fourth Proportional to 136,934,860.12, 188,990,388.81 and 86,703,747.53
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Solution
The fourth proportional to 136,934,860.12, 188,990,388.81 and 86,703,747.53 is: 119,664,013.55
Step by Step Solution
- Step 1: Write the proportion equation
136,934,860.12 : 188,990,388.81 = 86,703,747.53 : x - Step 2: Convert to fraction form
136,934,860.12/188,990,388.81 = 86,703,747.53/x - Step 3: Cross multiply
136,934,860.12x = 188,990,388.81 × 86,703,747.53 - Step 4: Simplify right side
136,934,860.12x = 16,386,174,956,033,826 - Step 5: Solve for x
x = 16,386,174,956,033,826/136,934,860.12 - Step 6: Final answer
x = 119,664,013.55
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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.