Finding the Fourth Proportional to 121,044.28, 167,160.88 and 99,745.06
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Solution
The fourth proportional to 121,044.28, 167,160.88 and 99,745.06 is: 137,746.88
Step by Step Solution
- Step 1: Write the proportion equation
121,044.28 : 167,160.88 = 99,745.06 : x - Step 2: Convert to fraction form
121,044.28/167,160.88 = 99,745.06/x - Step 3: Cross multiply
121,044.28x = 167,160.88 × 99,745.06 - Step 4: Simplify right side
121,044.28x = 16,673,472,005.25 - Step 5: Solve for x
x = 16,673,472,005.25/121,044.28 - Step 6: Final answer
x = 137,746.88
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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.