Finding the Fourth Proportional to 121,423.36, 167,504.10 and 81,149.80
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Solution
The fourth proportional to 121,423.36, 167,504.10 and 81,149.80 is: 111,946.53
Step by Step Solution
- Step 1: Write the proportion equation
121,423.36 : 167,504.10 = 81,149.80 : x - Step 2: Convert to fraction form
121,423.36/167,504.10 = 81,149.80/x - Step 3: Cross multiply
121,423.36x = 167,504.10 × 81,149.80 - Step 4: Simplify right side
121,423.36x = 13,592,924,214.18 - Step 5: Solve for x
x = 13,592,924,214.18/121,423.36 - Step 6: Final answer
x = 111,946.53
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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.