Finding the Fourth Proportional to 122,953.98, 169,754.97 and 100,346.98
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Solution
The fourth proportional to 122,953.98, 169,754.97 and 100,346.98 is: 138,542.88
Step by Step Solution
- Step 1: Write the proportion equation
122,953.98 : 169,754.97 = 100,346.98 : x - Step 2: Convert to fraction form
122,953.98/169,754.97 = 100,346.98/x - Step 3: Cross multiply
122,953.98x = 169,754.97 × 100,346.98 - Step 4: Simplify right side
122,953.98x = 17,034,398,579.49 - Step 5: Solve for x
x = 17,034,398,579.49/122,953.98 - Step 6: Final answer
x = 138,542.88
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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.