Finding the Fourth Proportional to 135,639.24, 187,201.44 and 75,223.32
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Solution
The fourth proportional to 135,639.24, 187,201.44 and 75,223.32 is: 103,818.88
Step by Step Solution
- Step 1: Write the proportion equation
135,639.24 : 187,201.44 = 75,223.32 : x - Step 2: Convert to fraction form
135,639.24/187,201.44 = 75,223.32/x - Step 3: Cross multiply
135,639.24x = 187,201.44 × 75,223.32 - Step 4: Simplify right side
135,639.24x = 14,081,913,825.58 - Step 5: Solve for x
x = 14,081,913,825.58/135,639.24 - Step 6: Final answer
x = 103,818.88
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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.