Finding the Fourth Proportional to 158,679.49, 218,977.99 and 87,060.03
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Solution
The fourth proportional to 158,679.49, 218,977.99 and 87,060.03 is: 120,143.00
Step by Step Solution
- Step 1: Write the proportion equation
158,679.49 : 218,977.99 = 87,060.03 : x - Step 2: Convert to fraction form
158,679.49/218,977.99 = 87,060.03/x - Step 3: Cross multiply
158,679.49x = 218,977.99 × 87,060.03 - Step 4: Simplify right side
158,679.49x = 19,064,229,709.07 - Step 5: Solve for x
x = 19,064,229,709.07/158,679.49 - Step 6: Final answer
x = 120,143.00
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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.