Finding the Fourth Proportional to 119,850.86, 165,387.18 and 66,135.74
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Solution
The fourth proportional to 119,850.86, 165,387.18 and 66,135.74 is: 91,263.45
Step by Step Solution
- Step 1: Write the proportion equation
119,850.86 : 165,387.18 = 66,135.74 : x - Step 2: Convert to fraction form
119,850.86/165,387.18 = 66,135.74/x - Step 3: Cross multiply
119,850.86x = 165,387.18 × 66,135.74 - Step 4: Simplify right side
119,850.86x = 10,938,003,535.81 - Step 5: Solve for x
x = 10,938,003,535.81/119,850.86 - Step 6: Final answer
x = 91,263.45
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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.