Finding the Fourth Proportional to 212,257.16, 292,956.70 and 121,673.90
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Solution
The fourth proportional to 212,257.16, 292,956.70 and 121,673.90 is: 167,933.95
Step by Step Solution
- Step 1: Write the proportion equation
212,257.16 : 292,956.70 = 121,673.90 : x - Step 2: Convert to fraction form
212,257.16/292,956.70 = 121,673.90/x - Step 3: Cross multiply
212,257.16x = 292,956.70 × 121,673.90 - Step 4: Simplify right side
212,257.16x = 35,645,183,228.59 - Step 5: Solve for x
x = 35,645,183,228.59/212,257.16 - Step 6: Final answer
x = 167,933.95
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1.5x scale
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.