Finding the Fourth Proportional to 117,197,845.74, 161,721,374.04 and 67,654,180.62
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Solution
The fourth proportional to 117,197,845.74, 161,721,374.04 and 67,654,180.62 is: 93,356,042.34
Step by Step Solution
- Step 1: Write the proportion equation
117,197,845.74 : 161,721,374.04 = 67,654,180.62 : x - Step 2: Convert to fraction form
117,197,845.74/161,721,374.04 = 67,654,180.62/x - Step 3: Cross multiply
117,197,845.74x = 161,721,374.04 × 67,654,180.62 - Step 4: Simplify right side
117,197,845.74x = 10,941,127,049,416,740 - Step 5: Solve for x
x = 10,941,127,049,416,740/117,197,845.74 - Step 6: Final answer
x = 93,356,042.34
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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.