Finding the Fourth Proportional to 121,601.58, 167,887.08 and 83,425.02
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Solution
The fourth proportional to 121,601.58, 167,887.08 and 83,425.02 is: 115,179.28
Step by Step Solution
- Step 1: Write the proportion equation
121,601.58 : 167,887.08 = 83,425.02 : x - Step 2: Convert to fraction form
121,601.58/167,887.08 = 83,425.02/x - Step 3: Cross multiply
121,601.58x = 167,887.08 × 83,425.02 - Step 4: Simplify right side
121,601.58x = 14,005,983,006.74 - Step 5: Solve for x
x = 14,005,983,006.74/121,601.58 - Step 6: Final answer
x = 115,179.28
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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.