Finding the Fourth Proportional to 129,310,249.95, 193,965,374.93 and 115,280,207.55
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Solution
The fourth proportional to 129,310,249.95, 193,965,374.93 and 115,280,207.55 is: 172,920,311.33
Step by Step Solution
- Step 1: Write the proportion equation
129,310,249.95 : 193,965,374.93 = 115,280,207.55 : x - Step 2: Convert to fraction form
129,310,249.95/193,965,374.93 = 115,280,207.55/x - Step 3: Cross multiply
129,310,249.95x = 193,965,374.93 × 115,280,207.55 - Step 4: Simplify right side
129,310,249.95x = 22,360,368,679,443,968 - Step 5: Solve for x
x = 22,360,368,679,443,968/129,310,249.95 - Step 6: Final answer
x = 172,920,311.33
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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.