Finding the Fourth Proportional to 138,114.47, 190,599.93 and 81,525.84
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Solution
The fourth proportional to 138,114.47, 190,599.93 and 81,525.84 is: 112,506.82
Step by Step Solution
- Step 1: Write the proportion equation
138,114.47 : 190,599.93 = 81,525.84 : x - Step 2: Convert to fraction form
138,114.47/190,599.93 = 81,525.84/x - Step 3: Cross multiply
138,114.47x = 190,599.93 × 81,525.84 - Step 4: Simplify right side
138,114.47x = 15,538,819,397.19 - Step 5: Solve for x
x = 15,538,819,397.19/138,114.47 - Step 6: Final answer
x = 112,506.82
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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.