Finding the Fourth Proportional to 185,821.19, 256,469.18 and 121,178.19
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Solution
The fourth proportional to 185,821.19, 256,469.18 and 121,178.19 is: 167,249.34
Step by Step Solution
- Step 1: Write the proportion equation
185,821.19 : 256,469.18 = 121,178.19 : x - Step 2: Convert to fraction form
185,821.19/256,469.18 = 121,178.19/x - Step 3: Cross multiply
185,821.19x = 256,469.18 × 121,178.19 - Step 4: Simplify right side
185,821.19x = 31,078,470,417.29 - Step 5: Solve for x
x = 31,078,470,417.29/185,821.19 - Step 6: Final answer
x = 167,249.34
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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.