Finding the Fourth Proportional to 187,007,005.12, 258,057,369.35 and 107,609,251.64
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Solution
The fourth proportional to 187,007,005.12, 258,057,369.35 and 107,609,251.64 is: 148,493,690.80
Step by Step Solution
- Step 1: Write the proportion equation
187,007,005.12 : 258,057,369.35 = 107,609,251.64 : x - Step 2: Convert to fraction form
187,007,005.12/258,057,369.35 = 107,609,251.64/x - Step 3: Cross multiply
187,007,005.12x = 258,057,369.35 × 107,609,251.64 - Step 4: Simplify right side
187,007,005.12x = 27,769,360,395,940,572 - Step 5: Solve for x
x = 27,769,360,395,940,572/187,007,005.12 - Step 6: Final answer
x = 148,493,690.80
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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.