Finding the Fourth Proportional to 118,860,207.20, 178,290,310.80 and 118,860,207.20
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Solution
The fourth proportional to 118,860,207.20, 178,290,310.80 and 118,860,207.20 is: 178,290,310.80
Step by Step Solution
- Step 1: Write the proportion equation
118,860,207.20 : 178,290,310.80 = 118,860,207.20 : x - Step 2: Convert to fraction form
118,860,207.20/178,290,310.80 = 118,860,207.20/x - Step 3: Cross multiply
118,860,207.20x = 178,290,310.80 × 118,860,207.20 - Step 4: Simplify right side
118,860,207.20x = 21,191,623,283,440,400 - Step 5: Solve for x
x = 21,191,623,283,440,400/118,860,207.20 - Step 6: Final answer
x = 178,290,310.80
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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.