Finding the Fourth Proportional to 212,513.99, 293,281.58 and 121,869.23
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Solution
The fourth proportional to 212,513.99, 293,281.58 and 121,869.23 is: 168,186.57
Step by Step Solution
- Step 1: Write the proportion equation
212,513.99 : 293,281.58 = 121,869.23 : x - Step 2: Convert to fraction form
212,513.99/293,281.58 = 121,869.23/x - Step 3: Cross multiply
212,513.99x = 293,281.58 × 121,869.23 - Step 4: Simplify right side
212,513.99x = 35,741,999,166.05 - Step 5: Solve for x
x = 35,741,999,166.05/212,513.99 - Step 6: Final answer
x = 168,186.57
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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.