Finding the Fourth Proportional to 138,130.77, 190,637.33 and 77,703.96
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Solution
The fourth proportional to 138,130.77, 190,637.33 and 77,703.96 is: 107,240.95
Step by Step Solution
- Step 1: Write the proportion equation
138,130.77 : 190,637.33 = 77,703.96 : x - Step 2: Convert to fraction form
138,130.77/190,637.33 = 77,703.96/x - Step 3: Cross multiply
138,130.77x = 190,637.33 × 77,703.96 - Step 4: Simplify right side
138,130.77x = 14,813,275,076.31 - Step 5: Solve for x
x = 14,813,275,076.31/138,130.77 - Step 6: Final answer
x = 107,240.95
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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.