Finding the Fourth Proportional to 121,718.40, 167,972.23 and 68,005.68
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Solution
The fourth proportional to 121,718.40, 167,972.23 and 68,005.68 is: 93,848.31
Step by Step Solution
- Step 1: Write the proportion equation
121,718.40 : 167,972.23 = 68,005.68 : x - Step 2: Convert to fraction form
121,718.40/167,972.23 = 68,005.68/x - Step 3: Cross multiply
121,718.40x = 167,972.23 × 68,005.68 - Step 4: Simplify right side
121,718.40x = 11,423,065,177.38 - Step 5: Solve for x
x = 11,423,065,177.38/121,718.40 - Step 6: Final answer
x = 93,848.31
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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.