Finding the Fourth Proportional to 139,202.64, 192,097.60 and 81,848.44
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Solution
The fourth proportional to 139,202.64, 192,097.60 and 81,848.44 is: 112,949.65
Step by Step Solution
- Step 1: Write the proportion equation
139,202.64 : 192,097.60 = 81,848.44 : x - Step 2: Convert to fraction form
139,202.64/192,097.60 = 81,848.44/x - Step 3: Cross multiply
139,202.64x = 192,097.60 × 81,848.44 - Step 4: Simplify right side
139,202.64x = 15,722,888,887.74 - Step 5: Solve for x
x = 15,722,888,887.74/139,202.64 - Step 6: Final answer
x = 112,949.65
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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.