Finding the Fourth Proportional to 158,908.70, 219,313.53 and 91,840.70
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Solution
The fourth proportional to 158,908.70, 219,313.53 and 91,840.70 is: 126,751.45
Step by Step Solution
- Step 1: Write the proportion equation
158,908.70 : 219,313.53 = 91,840.70 : x - Step 2: Convert to fraction form
158,908.70/219,313.53 = 91,840.70/x - Step 3: Cross multiply
158,908.70x = 219,313.53 × 91,840.70 - Step 4: Simplify right side
158,908.70x = 20,141,908,114.67 - Step 5: Solve for x
x = 20,141,908,114.67/158,908.70 - Step 6: Final answer
x = 126,751.45
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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.