Finding the Fourth Proportional to 138,150.06, 207,225.08 and 91,392.00
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Solution
The fourth proportional to 138,150.06, 207,225.08 and 91,392.00 is: 137,087.99
Step by Step Solution
- Step 1: Write the proportion equation
138,150.06 : 207,225.08 = 91,392.00 : x - Step 2: Convert to fraction form
138,150.06/207,225.08 = 91,392.00/x - Step 3: Cross multiply
138,150.06x = 207,225.08 × 91,392.00 - Step 4: Simplify right side
138,150.06x = 18,938,713,703.71 - Step 5: Solve for x
x = 18,938,713,703.71/138,150.06 - Step 6: Final answer
x = 137,087.99
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.