Finding the Fourth Proportional to 118,103,999.20, 177,155,998.80 and 115,449,791.20
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Solution
The fourth proportional to 118,103,999.20, 177,155,998.80 and 115,449,791.20 is: 173,174,686.80
Step by Step Solution
- Step 1: Write the proportion equation
118,103,999.20 : 177,155,998.80 = 115,449,791.20 : x - Step 2: Convert to fraction form
118,103,999.20/177,155,998.80 = 115,449,791.20/x - Step 3: Cross multiply
118,103,999.20x = 177,155,998.80 × 115,449,791.20 - Step 4: Simplify right side
118,103,999.20x = 20,452,623,071,287,452 - Step 5: Solve for x
x = 20,452,623,071,287,452/118,103,999.20 - Step 6: Final answer
x = 173,174,686.80
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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.