Finding the Fourth Proportional to 221,101.09, 305,120.51 and 125,613.02
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Solution
The fourth proportional to 221,101.09, 305,120.51 and 125,613.02 is: 173,346.55
Step by Step Solution
- Step 1: Write the proportion equation
221,101.09 : 305,120.51 = 125,613.02 : x - Step 2: Convert to fraction form
221,101.09/305,120.51 = 125,613.02/x - Step 3: Cross multiply
221,101.09x = 305,120.51 × 125,613.02 - Step 4: Simplify right side
221,101.09x = 38,327,109,801.87 - Step 5: Solve for x
x = 38,327,109,801.87/221,101.09 - Step 6: Final answer
x = 173,346.55
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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.