Finding the Fourth Proportional to 121,972.40, 182,769.66 and 84,605.12
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Solution
The fourth proportional to 121,972.40, 182,769.66 and 84,605.12 is: 126,776.62
Step by Step Solution
- Step 1: Write the proportion equation
121,972.40 : 182,769.66 = 84,605.12 : x - Step 2: Convert to fraction form
121,972.40/182,769.66 = 84,605.12/x - Step 3: Cross multiply
121,972.40x = 182,769.66 × 84,605.12 - Step 4: Simplify right side
121,972.40x = 15,463,249,016.66 - Step 5: Solve for x
x = 15,463,249,016.66/121,972.40 - Step 6: Final answer
x = 126,776.62
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.