Finding the Fourth Proportional to 129,102,131.62, 178,164,675.53 and 70,368,600.91
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Solution
The fourth proportional to 129,102,131.62, 178,164,675.53 and 70,368,600.91 is: 97,110,704.46
Step by Step Solution
- Step 1: Write the proportion equation
129,102,131.62 : 178,164,675.53 = 70,368,600.91 : x - Step 2: Convert to fraction form
129,102,131.62/178,164,675.53 = 70,368,600.91/x - Step 3: Cross multiply
129,102,131.62x = 178,164,675.53 × 70,368,600.91 - Step 4: Simplify right side
129,102,131.62x = 12,537,198,948,630,212 - Step 5: Solve for x
x = 12,537,198,948,630,212/129,102,131.62 - Step 6: Final answer
x = 97,110,704.46
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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.