Finding the Fourth Proportional to 209,893,155.12, 289,745,432.64 and 135,589,945.68
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Solution
The fourth proportional to 209,893,155.12, 289,745,432.64 and 135,589,945.68 is: 187,174,124.14
Step by Step Solution
- Step 1: Write the proportion equation
209,893,155.12 : 289,745,432.64 = 135,589,945.68 : x - Step 2: Convert to fraction form
209,893,155.12/289,745,432.64 = 135,589,945.68/x - Step 3: Cross multiply
209,893,155.12x = 289,745,432.64 × 135,589,945.68 - Step 4: Simplify right side
209,893,155.12x = 39,286,567,472,685,696 - Step 5: Solve for x
x = 39,286,567,472,685,696/209,893,155.12 - Step 6: Final answer
x = 187,174,124.14
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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.