Finding the Fourth Proportional to 153,923,728.40, 212,412,120.98 and 83,358,765.98
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Solution
The fourth proportional to 153,923,728.40, 212,412,120.98 and 83,358,765.98 is: 115,033,675.88
Step by Step Solution
- Step 1: Write the proportion equation
153,923,728.40 : 212,412,120.98 = 83,358,765.98 : x - Step 2: Convert to fraction form
153,923,728.40/212,412,120.98 = 83,358,765.98/x - Step 3: Cross multiply
153,923,728.40x = 212,412,120.98 × 83,358,765.98 - Step 4: Simplify right side
153,923,728.40x = 17,706,412,283,670,474 - Step 5: Solve for x
x = 17,706,412,283,670,474/153,923,728.40 - Step 6: Final answer
x = 115,033,675.88
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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.