Finding the Fourth Proportional to 138,854.28, 191,475.56 and 118,777.62
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Solution
The fourth proportional to 138,854.28, 191,475.56 and 118,777.62 is: 163,790.49
Step by Step Solution
- Step 1: Write the proportion equation
138,854.28 : 191,475.56 = 118,777.62 : x - Step 2: Convert to fraction form
138,854.28/191,475.56 = 118,777.62/x - Step 3: Cross multiply
138,854.28x = 191,475.56 × 118,777.62 - Step 4: Simplify right side
138,854.28x = 22,743,010,711.08 - Step 5: Solve for x
x = 22,743,010,711.08/138,854.28 - Step 6: Final answer
x = 163,790.49
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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.