Finding the Fourth Proportional to 138,669.36, 191,445.84 and 91,006.08
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Solution
The fourth proportional to 138,669.36, 191,445.84 and 91,006.08 is: 125,642.29
Step by Step Solution
- Step 1: Write the proportion equation
138,669.36 : 191,445.84 = 91,006.08 : x - Step 2: Convert to fraction form
138,669.36/191,445.84 = 91,006.08/x - Step 3: Cross multiply
138,669.36x = 191,445.84 × 91,006.08 - Step 4: Simplify right side
138,669.36x = 17,422,735,430.71 - Step 5: Solve for x
x = 17,422,735,430.71/138,669.36 - Step 6: Final answer
x = 125,642.29
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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.