Finding the Fourth Proportional to 138,169,109.67, 190,593,439.18 and 89,276,537.67
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Solution
The fourth proportional to 138,169,109.67, 190,593,439.18 and 89,276,537.67 is: 123,149,974.65
Step by Step Solution
- Step 1: Write the proportion equation
138,169,109.67 : 190,593,439.18 = 89,276,537.67 : x - Step 2: Convert to fraction form
138,169,109.67/190,593,439.18 = 89,276,537.67/x - Step 3: Cross multiply
138,169,109.67x = 190,593,439.18 × 89,276,537.67 - Step 4: Simplify right side
138,169,109.67x = 17,015,522,352,608,124 - Step 5: Solve for x
x = 17,015,522,352,608,124/138,169,109.67 - Step 6: Final answer
x = 123,149,974.65
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.