Finding the Fourth Proportional to 155,990,031.84, 215,490,469.43 and 124,586,850.98
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Solution
The fourth proportional to 155,990,031.84, 215,490,469.43 and 124,586,850.98 is: 172,108,939.82
Step by Step Solution
- Step 1: Write the proportion equation
155,990,031.84 : 215,490,469.43 = 124,586,850.98 : x - Step 2: Convert to fraction form
155,990,031.84/215,490,469.43 = 124,586,850.98/x - Step 3: Cross multiply
155,990,031.84x = 215,490,469.43 × 124,586,850.98 - Step 4: Simplify right side
155,990,031.84x = 26,847,279,002,485,656 - Step 5: Solve for x
x = 26,847,279,002,485,656/155,990,031.84 - Step 6: Final answer
x = 172,108,939.82
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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.