Finding the Fourth Proportional to 135,886,473.10, 187,525,490.16 and 77,147,939.62
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Solution
The fourth proportional to 135,886,473.10, 187,525,490.16 and 77,147,939.62 is: 106,465,381.45
Step by Step Solution
- Step 1: Write the proportion equation
135,886,473.10 : 187,525,490.16 = 77,147,939.62 : x - Step 2: Convert to fraction form
135,886,473.10/187,525,490.16 = 77,147,939.62/x - Step 3: Cross multiply
135,886,473.10x = 187,525,490.16 × 77,147,939.62 - Step 4: Simplify right side
135,886,473.10x = 14,467,205,192,074,584 - Step 5: Solve for x
x = 14,467,205,192,074,584/135,886,473.10 - Step 6: Final answer
x = 106,465,381.45
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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.