Finding the Fourth Proportional to 157,439.55, 217,258.38 and 89,447.09
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Solution
The fourth proportional to 157,439.55, 217,258.38 and 89,447.09 is: 123,432.32
Step by Step Solution
- Step 1: Write the proportion equation
157,439.55 : 217,258.38 = 89,447.09 : x - Step 2: Convert to fraction form
157,439.55/217,258.38 = 89,447.09/x - Step 3: Cross multiply
157,439.55x = 217,258.38 × 89,447.09 - Step 4: Simplify right side
157,439.55x = 19,433,128,335.59 - Step 5: Solve for x
x = 19,433,128,335.59/157,439.55 - Step 6: Final answer
x = 123,432.32
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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.