Finding the Fourth Proportional to 158,818.42, 219,169.85 and 87,203.08
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Solution
The fourth proportional to 158,818.42, 219,169.85 and 87,203.08 is: 120,340.49
Step by Step Solution
- Step 1: Write the proportion equation
158,818.42 : 219,169.85 = 87,203.08 : x - Step 2: Convert to fraction form
158,818.42/219,169.85 = 87,203.08/x - Step 3: Cross multiply
158,818.42x = 219,169.85 × 87,203.08 - Step 4: Simplify right side
158,818.42x = 19,112,286,291.60 - Step 5: Solve for x
x = 19,112,286,291.60/158,818.42 - Step 6: Final answer
x = 120,340.49
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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.