Finding the Fourth Proportional to 121,278.70, 170,140.10 and 121,278.70
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Solution
The fourth proportional to 121,278.70, 170,140.10 and 121,278.70 is: 170,140.10
Step by Step Solution
- Step 1: Write the proportion equation
121,278.70 : 170,140.10 = 121,278.70 : x - Step 2: Convert to fraction form
121,278.70/170,140.10 = 121,278.70/x - Step 3: Cross multiply
121,278.70x = 170,140.10 × 121,278.70 - Step 4: Simplify right side
121,278.70x = 20,634,370,145.87 - Step 5: Solve for x
x = 20,634,370,145.87/121,278.70 - Step 6: Final answer
x = 170,140.10
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.