Finding the Fourth Proportional to 128,495,203.24, 192,745,290.30 and 31,451,742.76
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Solution
The fourth proportional to 128,495,203.24, 192,745,290.30 and 31,451,742.76 is: 47,178,222.50
Step by Step Solution
- Step 1: Write the proportion equation
128,495,203.24 : 192,745,290.30 = 31,451,742.76 : x - Step 2: Convert to fraction form
128,495,203.24/192,745,290.30 = 31,451,742.76/x - Step 3: Cross multiply
128,495,203.24x = 192,745,290.30 × 31,451,742.76 - Step 4: Simplify right side
128,495,203.24x = 6,062,175,288,717,124 - Step 5: Solve for x
x = 6,062,175,288,717,124/128,495,203.24 - Step 6: Final answer
x = 47,178,222.50
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.