Finding the Fourth Proportional to 120,286,124.08, 165,994,919.21 and 65,281,980.58
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Solution
The fourth proportional to 120,286,124.08, 165,994,919.21 and 65,281,980.58 is: 90,089,170.09
Step by Step Solution
- Step 1: Write the proportion equation
120,286,124.08 : 165,994,919.21 = 65,281,980.58 : x - Step 2: Convert to fraction form
120,286,124.08/165,994,919.21 = 65,281,980.58/x - Step 3: Cross multiply
120,286,124.08x = 165,994,919.21 × 65,281,980.58 - Step 4: Simplify right side
120,286,124.08x = 10,836,477,092,245,890 - Step 5: Solve for x
x = 10,836,477,092,245,890/120,286,124.08 - Step 6: Final answer
x = 90,089,170.09
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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.