Finding the Fourth Proportional to 107,609.97, 148,683.20 and 77,335.05
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Solution
The fourth proportional to 107,609.97, 148,683.20 and 77,335.05 is: 106,852.77
Step by Step Solution
- Step 1: Write the proportion equation
107,609.97 : 148,683.20 = 77,335.05 : x - Step 2: Convert to fraction form
107,609.97/148,683.20 = 77,335.05/x - Step 3: Cross multiply
107,609.97x = 148,683.20 × 77,335.05 - Step 4: Simplify right side
107,609.97x = 11,498,422,877.05 - Step 5: Solve for x
x = 11,498,422,877.05/107,609.97 - Step 6: Final answer
x = 106,852.77
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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.