Finding the Fourth Proportional to 121,139.83, 166,616.62 and 97,214.05
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Solution
The fourth proportional to 121,139.83, 166,616.62 and 97,214.05 is: 133,708.92
Step by Step Solution
- Step 1: Write the proportion equation
121,139.83 : 166,616.62 = 97,214.05 : x - Step 2: Convert to fraction form
121,139.83/166,616.62 = 97,214.05/x - Step 3: Cross multiply
121,139.83x = 166,616.62 × 97,214.05 - Step 4: Simplify right side
121,139.83x = 16,197,476,427.51 - Step 5: Solve for x
x = 16,197,476,427.51/121,139.83 - Step 6: Final answer
x = 133,708.92
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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.