Finding the Fourth Proportional to 153,979,814.84, 212,420,915.98 and 136,356,677.24
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Solution
The fourth proportional to 153,979,814.84, 212,420,915.98 and 136,356,677.24 is: 188,109,138.26
Step by Step Solution
- Step 1: Write the proportion equation
153,979,814.84 : 212,420,915.98 = 136,356,677.24 : x - Step 2: Convert to fraction form
153,979,814.84/212,420,915.98 = 136,356,677.24/x - Step 3: Cross multiply
153,979,814.84x = 212,420,915.98 × 136,356,677.24 - Step 4: Simplify right side
153,979,814.84x = 28,965,010,277,907,024 - Step 5: Solve for x
x = 28,965,010,277,907,024/153,979,814.84 - Step 6: Final answer
x = 188,109,138.26
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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.