Finding the Fourth Proportional to 142,707.16, 197,069.34 and 91,808.44
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Solution
The fourth proportional to 142,707.16, 197,069.34 and 91,808.44 is: 126,781.51
Step by Step Solution
- Step 1: Write the proportion equation
142,707.16 : 197,069.34 = 91,808.44 : x - Step 2: Convert to fraction form
142,707.16/197,069.34 = 91,808.44/x - Step 3: Cross multiply
142,707.16x = 197,069.34 × 91,808.44 - Step 4: Simplify right side
142,707.16x = 18,092,628,677.23 - Step 5: Solve for x
x = 18,092,628,677.23/142,707.16 - Step 6: Final answer
x = 126,781.51
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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.