Finding the Fourth Proportional to 138,998.08, 191,817.60 and 75,335.68
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Solution
The fourth proportional to 138,998.08, 191,817.60 and 75,335.68 is: 103,963.37
Step by Step Solution
- Step 1: Write the proportion equation
138,998.08 : 191,817.60 = 75,335.68 : x - Step 2: Convert to fraction form
138,998.08/191,817.60 = 75,335.68/x - Step 3: Cross multiply
138,998.08x = 191,817.60 × 75,335.68 - Step 4: Simplify right side
138,998.08x = 14,450,709,331.97 - Step 5: Solve for x
x = 14,450,709,331.97/138,998.08 - Step 6: Final answer
x = 103,963.37
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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.