Finding the Fourth Proportional to 121,420.84, 167,560.76 and 71,119.84
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Solution
The fourth proportional to 121,420.84, 167,560.76 and 71,119.84 is: 98,145.38
Step by Step Solution
- Step 1: Write the proportion equation
121,420.84 : 167,560.76 = 71,119.84 : x - Step 2: Convert to fraction form
121,420.84/167,560.76 = 71,119.84/x - Step 3: Cross multiply
121,420.84x = 167,560.76 × 71,119.84 - Step 4: Simplify right side
121,420.84x = 11,916,894,441.48 - Step 5: Solve for x
x = 11,916,894,441.48/121,420.84 - Step 6: Final answer
x = 98,145.38
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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.