Finding the Fourth Proportional to 157,515.32, 217,412.58 and 89,572.12
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Solution
The fourth proportional to 157,515.32, 217,412.58 and 89,572.12 is: 123,633.09
Step by Step Solution
- Step 1: Write the proportion equation
157,515.32 : 217,412.58 = 89,572.12 : x - Step 2: Convert to fraction form
157,515.32/217,412.58 = 89,572.12/x - Step 3: Cross multiply
157,515.32x = 217,412.58 × 89,572.12 - Step 4: Simplify right side
157,515.32x = 19,474,105,705.27 - Step 5: Solve for x
x = 19,474,105,705.27/157,515.32 - Step 6: Final answer
x = 123,633.09
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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.