Finding the Fourth Proportional to 158,781.82, 219,118.05 and 87,163.06
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Solution
The fourth proportional to 158,781.82, 219,118.05 and 87,163.06 is: 120,284.55
Step by Step Solution
- Step 1: Write the proportion equation
158,781.82 : 219,118.05 = 87,163.06 : x - Step 2: Convert to fraction form
158,781.82/219,118.05 = 87,163.06/x - Step 3: Cross multiply
158,781.82x = 219,118.05 × 87,163.06 - Step 4: Simplify right side
158,781.82x = 19,098,999,739.23 - Step 5: Solve for x
x = 19,098,999,739.23/158,781.82 - Step 6: Final answer
x = 120,284.55
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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.