Finding the Fourth Proportional to 158,917.81, 219,305.56 and 86,319.95
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Solution
The fourth proportional to 158,917.81, 219,305.56 and 86,319.95 is: 119,120.98
Step by Step Solution
- Step 1: Write the proportion equation
158,917.81 : 219,305.56 = 86,319.95 : x - Step 2: Convert to fraction form
158,917.81/219,305.56 = 86,319.95/x - Step 3: Cross multiply
158,917.81x = 219,305.56 × 86,319.95 - Step 4: Simplify right side
158,917.81x = 18,930,444,973.92 - Step 5: Solve for x
x = 18,930,444,973.92/158,917.81 - Step 6: Final answer
x = 119,120.98
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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.