Finding the Fourth Proportional to 121,773.97, 167,938.89 and 101,423.59
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Solution
The fourth proportional to 121,773.97, 167,938.89 and 101,423.59 is: 139,873.60
Step by Step Solution
- Step 1: Write the proportion equation
121,773.97 : 167,938.89 = 101,423.59 : x - Step 2: Convert to fraction form
121,773.97/167,938.89 = 101,423.59/x - Step 3: Cross multiply
121,773.97x = 167,938.89 × 101,423.59 - Step 4: Simplify right side
121,773.97x = 17,032,964,324.23 - Step 5: Solve for x
x = 17,032,964,324.23/121,773.97 - Step 6: Final answer
x = 139,873.60
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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.