Finding the Fourth Proportional to 217,130.96, 299,620.68 and 121,641.68
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Solution
The fourth proportional to 217,130.96, 299,620.68 and 121,641.68 is: 167,854.29
Step by Step Solution
- Step 1: Write the proportion equation
217,130.96 : 299,620.68 = 121,641.68 : x - Step 2: Convert to fraction form
217,130.96/299,620.68 = 121,641.68/x - Step 3: Cross multiply
217,130.96x = 299,620.68 × 121,641.68 - Step 4: Simplify right side
217,130.96x = 36,446,362,877.94 - Step 5: Solve for x
x = 36,446,362,877.94/217,130.96 - Step 6: Final answer
x = 167,854.29
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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.