Finding the Fourth Proportional to 100,239,128.84, 138,327,528.84 and 55,584,854.12
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Solution
The fourth proportional to 100,239,128.84, 138,327,528.84 and 55,584,854.12 is: 76,705,729.59
Step by Step Solution
- Step 1: Write the proportion equation
100,239,128.84 : 138,327,528.84 = 55,584,854.12 : x - Step 2: Convert to fraction form
100,239,128.84/138,327,528.84 = 55,584,854.12/x - Step 3: Cross multiply
100,239,128.84x = 138,327,528.84 × 55,584,854.12 - Step 4: Simplify right side
100,239,128.84x = 7,688,915,511,351,493 - Step 5: Solve for x
x = 7,688,915,511,351,493/100,239,128.84 - Step 6: Final answer
x = 76,705,729.59
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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.