Finding the Fourth Proportional to 159,555.06, 220,176.09 and 87,931.08
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Solution
The fourth proportional to 159,555.06, 220,176.09 and 87,931.08 is: 121,339.44
Step by Step Solution
- Step 1: Write the proportion equation
159,555.06 : 220,176.09 = 87,931.08 : x - Step 2: Convert to fraction form
159,555.06/220,176.09 = 87,931.08/x - Step 3: Cross multiply
159,555.06x = 220,176.09 × 87,931.08 - Step 4: Simplify right side
159,555.06x = 19,360,321,383.88 - Step 5: Solve for x
x = 19,360,321,383.88/159,555.06 - Step 6: Final answer
x = 121,339.44
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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.