Finding the Fourth Proportional to 159,395.08, 219,960.40 and 87,775.49
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Solution
The fourth proportional to 159,395.08, 219,960.40 and 87,775.49 is: 121,127.53
Step by Step Solution
- Step 1: Write the proportion equation
159,395.08 : 219,960.40 = 87,775.49 : x - Step 2: Convert to fraction form
159,395.08/219,960.40 = 87,775.49/x - Step 3: Cross multiply
159,395.08x = 219,960.40 × 87,775.49 - Step 4: Simplify right side
159,395.08x = 19,307,131,890.60 - Step 5: Solve for x
x = 19,307,131,890.60/159,395.08 - Step 6: Final answer
x = 121,127.53
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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.