Finding the Fourth Proportional to 121,244,493.42, 167,317,467.91 and 65,489,913.50
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Solution
The fourth proportional to 121,244,493.42, 167,317,467.91 and 65,489,913.50 is: 90,376,116.82
Step by Step Solution
- Step 1: Write the proportion equation
121,244,493.42 : 167,317,467.91 = 65,489,913.50 : x - Step 2: Convert to fraction form
121,244,493.42/167,317,467.91 = 65,489,913.50/x - Step 3: Cross multiply
121,244,493.42x = 167,317,467.91 × 65,489,913.50 - Step 4: Simplify right side
121,244,493.42x = 10,957,606,500,719,494 - Step 5: Solve for x
x = 10,957,606,500,719,494/121,244,493.42 - Step 6: Final answer
x = 90,376,116.82
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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.