Finding the Fourth Proportional to 124,804.20, 172,229.49 and 68,215.98
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Solution
The fourth proportional to 124,804.20, 172,229.49 and 68,215.98 is: 94,137.89
Step by Step Solution
- Step 1: Write the proportion equation
124,804.20 : 172,229.49 = 68,215.98 : x - Step 2: Convert to fraction form
124,804.20/172,229.49 = 68,215.98/x - Step 3: Cross multiply
124,804.20x = 172,229.49 × 68,215.98 - Step 4: Simplify right side
124,804.20x = 11,748,803,445.25 - Step 5: Solve for x
x = 11,748,803,445.25/124,804.20 - Step 6: Final answer
x = 94,137.89
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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.