Finding the Fourth Proportional to 187,200.99, 258,451.83 and 121,852.08
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Solution
The fourth proportional to 187,200.99, 258,451.83 and 121,852.08 is: 168,230.38
Step by Step Solution
- Step 1: Write the proportion equation
187,200.99 : 258,451.83 = 121,852.08 : x - Step 2: Convert to fraction form
187,200.99/258,451.83 = 121,852.08/x - Step 3: Cross multiply
187,200.99x = 258,451.83 × 121,852.08 - Step 4: Simplify right side
187,200.99x = 31,492,893,065.31 - Step 5: Solve for x
x = 31,492,893,065.31/187,200.99 - Step 6: Final answer
x = 168,230.38
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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.