Finding the Fourth Proportional to 158,289.91, 218,440.05 and 86,669.92
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Solution
The fourth proportional to 158,289.91, 218,440.05 and 86,669.92 is: 119,604.48
Step by Step Solution
- Step 1: Write the proportion equation
158,289.91 : 218,440.05 = 86,669.92 : x - Step 2: Convert to fraction form
158,289.91/218,440.05 = 86,669.92/x - Step 3: Cross multiply
158,289.91x = 218,440.05 × 86,669.92 - Step 4: Simplify right side
158,289.91x = 18,932,181,658.30 - Step 5: Solve for x
x = 18,932,181,658.30/158,289.91 - Step 6: Final answer
x = 119,604.48
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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.