Finding the Fourth Proportional to 121,402.06, 166,643.51 and 107,673.18
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Solution
The fourth proportional to 121,402.06, 166,643.51 and 107,673.18 is: 147,798.45
Step by Step Solution
- Step 1: Write the proportion equation
121,402.06 : 166,643.51 = 107,673.18 : x - Step 2: Convert to fraction form
121,402.06/166,643.51 = 107,673.18/x - Step 3: Cross multiply
121,402.06x = 166,643.51 × 107,673.18 - Step 4: Simplify right side
121,402.06x = 17,943,036,648.06 - Step 5: Solve for x
x = 17,943,036,648.06/121,402.06 - Step 6: Final answer
x = 147,798.45
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.