Finding the Fourth Proportional to 124,707.88, 171,973.96 and 76,951.09
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Solution
The fourth proportional to 124,707.88, 171,973.96 and 76,951.09 is: 106,116.66
Step by Step Solution
- Step 1: Write the proportion equation
124,707.88 : 171,973.96 = 76,951.09 : x - Step 2: Convert to fraction form
124,707.88/171,973.96 = 76,951.09/x - Step 3: Cross multiply
124,707.88x = 171,973.96 × 76,951.09 - Step 4: Simplify right side
124,707.88x = 13,233,583,673.62 - Step 5: Solve for x
x = 13,233,583,673.62/124,707.88 - Step 6: Final answer
x = 106,116.66
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1.5x scale
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.