Finding the Fourth Proportional to 198,931.68, 274,538.16 and 109,507.68
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Solution
The fourth proportional to 198,931.68, 274,538.16 and 109,507.68 is: 151,127.45
Step by Step Solution
- Step 1: Write the proportion equation
198,931.68 : 274,538.16 = 109,507.68 : x - Step 2: Convert to fraction form
198,931.68/274,538.16 = 109,507.68/x - Step 3: Cross multiply
198,931.68x = 274,538.16 × 109,507.68 - Step 4: Simplify right side
198,931.68x = 30,064,036,973.07 - Step 5: Solve for x
x = 30,064,036,973.07/198,931.68 - Step 6: Final answer
x = 151,127.45
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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.