Finding the Fourth Proportional to 129,310,370.95, 193,965,556.43 and 115,280,328.55
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Solution
The fourth proportional to 129,310,370.95, 193,965,556.43 and 115,280,328.55 is: 172,920,492.83
Step by Step Solution
- Step 1: Write the proportion equation
129,310,370.95 : 193,965,556.43 = 115,280,328.55 : x - Step 2: Convert to fraction form
129,310,370.95/193,965,556.43 = 115,280,328.55/x - Step 3: Cross multiply
129,310,370.95x = 193,965,556.43 × 115,280,328.55 - Step 4: Simplify right side
129,310,370.95x = 22,360,413,072,633,964 - Step 5: Solve for x
x = 22,360,413,072,633,964/129,310,370.95 - Step 6: Final answer
x = 172,920,492.83
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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.