Finding the Fourth Proportional to 128,570.57, 177,421.43 and 71,206.01
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Solution
The fourth proportional to 128,570.57, 177,421.43 and 71,206.01 is: 98,260.99
Step by Step Solution
- Step 1: Write the proportion equation
128,570.57 : 177,421.43 = 71,206.01 : x - Step 2: Convert to fraction form
128,570.57/177,421.43 = 71,206.01/x - Step 3: Cross multiply
128,570.57x = 177,421.43 × 71,206.01 - Step 4: Simplify right side
128,570.57x = 12,633,470,875.66 - Step 5: Solve for x
x = 12,633,470,875.66/128,570.57 - Step 6: Final answer
x = 98,260.99
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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.