Finding the Fourth Proportional to 120,283.96, 165,989.58 and 66,569.02
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Solution
The fourth proportional to 120,283.96, 165,989.58 and 66,569.02 is: 91,863.98
Step by Step Solution
- Step 1: Write the proportion equation
120,283.96 : 165,989.58 = 66,569.02 : x - Step 2: Convert to fraction form
120,283.96/165,989.58 = 66,569.02/x - Step 3: Cross multiply
120,283.96x = 165,989.58 × 66,569.02 - Step 4: Simplify right side
120,283.96x = 11,049,763,670.81 - Step 5: Solve for x
x = 11,049,763,670.81/120,283.96 - Step 6: Final answer
x = 91,863.98
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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.