Finding the Fourth Proportional to 121,441.60, 168,149.28 and 115,220.80
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Solution
The fourth proportional to 121,441.60, 168,149.28 and 115,220.80 is: 159,535.90
Step by Step Solution
- Step 1: Write the proportion equation
121,441.60 : 168,149.28 = 115,220.80 : x - Step 2: Convert to fraction form
121,441.60/168,149.28 = 115,220.80/x - Step 3: Cross multiply
121,441.60x = 168,149.28 × 115,220.80 - Step 4: Simplify right side
121,441.60x = 19,374,294,561.02 - Step 5: Solve for x
x = 19,374,294,561.02/121,441.60 - Step 6: Final answer
x = 159,535.90
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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.