Finding the Fourth Proportional to 122,643.52, 169,262.09 and 68,201.12
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Solution
The fourth proportional to 122,643.52, 169,262.09 and 68,201.12 is: 94,125.35
Step by Step Solution
- Step 1: Write the proportion equation
122,643.52 : 169,262.09 = 68,201.12 : x - Step 2: Convert to fraction form
122,643.52/169,262.09 = 68,201.12/x - Step 3: Cross multiply
122,643.52x = 169,262.09 × 68,201.12 - Step 4: Simplify right side
122,643.52x = 11,543,864,111.54 - Step 5: Solve for x
x = 11,543,864,111.54/122,643.52 - Step 6: Final answer
x = 94,125.35
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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.