Finding the Fourth Proportional to 117,197,842.74, 161,721,369.90 and 67,654,177.62
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Solution
The fourth proportional to 117,197,842.74, 161,721,369.90 and 67,654,177.62 is: 93,356,038.20
Step by Step Solution
- Step 1: Write the proportion equation
117,197,842.74 : 161,721,369.90 = 67,654,177.62 : x - Step 2: Convert to fraction form
117,197,842.74/161,721,369.90 = 67,654,177.62/x - Step 3: Cross multiply
117,197,842.74x = 161,721,369.90 × 67,654,177.62 - Step 4: Simplify right side
117,197,842.74x = 10,941,126,284,164,322 - Step 5: Solve for x
x = 10,941,126,284,164,322/117,197,842.74 - Step 6: Final answer
x = 93,356,038.20
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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.