Finding the Fourth Proportional to 121,497.70, 182,246.55 and 91,973.20
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Solution
The fourth proportional to 121,497.70, 182,246.55 and 91,973.20 is: 137,959.80
Step by Step Solution
- Step 1: Write the proportion equation
121,497.70 : 182,246.55 = 91,973.20 : x - Step 2: Convert to fraction form
121,497.70/182,246.55 = 91,973.20/x - Step 3: Cross multiply
121,497.70x = 182,246.55 × 91,973.20 - Step 4: Simplify right side
121,497.70x = 16,761,798,392.46 - Step 5: Solve for x
x = 16,761,798,392.46/121,497.70 - Step 6: Final answer
x = 137,959.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.