Finding the Fourth Proportional to 153,894.24, 212,347.74 and 85,907.70
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Solution
The fourth proportional to 153,894.24, 212,347.74 and 85,907.70 is: 118,537.94
Step by Step Solution
- Step 1: Write the proportion equation
153,894.24 : 212,347.74 = 85,907.70 : x - Step 2: Convert to fraction form
153,894.24/212,347.74 = 85,907.70/x - Step 3: Cross multiply
153,894.24x = 212,347.74 × 85,907.70 - Step 4: Simplify right side
153,894.24x = 18,242,305,943.60 - Step 5: Solve for x
x = 18,242,305,943.60/153,894.24 - Step 6: Final answer
x = 118,537.94
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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.