Finding the Fourth Proportional to 154,225,464.10, 212,831,124.65 and 87,242,991.19
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Solution
The fourth proportional to 154,225,464.10, 212,831,124.65 and 87,242,991.19 is: 120,395,318.90
Step by Step Solution
- Step 1: Write the proportion equation
154,225,464.10 : 212,831,124.65 = 87,242,991.19 : x - Step 2: Convert to fraction form
154,225,464.10/212,831,124.65 = 87,242,991.19/x - Step 3: Cross multiply
154,225,464.10x = 212,831,124.65 × 87,242,991.19 - Step 4: Simplify right side
154,225,464.10x = 18,568,023,931,829,452 - Step 5: Solve for x
x = 18,568,023,931,829,452/154,225,464.10 - Step 6: Final answer
x = 120,395,318.90
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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.