Finding the Fourth Proportional to 212,135.97, 292,810.89 and 139,594.80
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Solution
The fourth proportional to 212,135.97, 292,810.89 and 139,594.80 is: 192,682.45
Step by Step Solution
- Step 1: Write the proportion equation
212,135.97 : 292,810.89 = 139,594.80 : x - Step 2: Convert to fraction form
212,135.97/292,810.89 = 139,594.80/x - Step 3: Cross multiply
212,135.97x = 292,810.89 × 139,594.80 - Step 4: Simplify right side
212,135.97x = 40,874,877,627.37 - Step 5: Solve for x
x = 40,874,877,627.37/212,135.97 - Step 6: Final answer
x = 192,682.45
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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.