Finding the Fourth Proportional to 99,281.28, 137,009.28 and 53,959.68
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Solution
The fourth proportional to 99,281.28, 137,009.28 and 53,959.68 is: 74,464.96
Step by Step Solution
- Step 1: Write the proportion equation
99,281.28 : 137,009.28 = 53,959.68 : x - Step 2: Convert to fraction form
99,281.28/137,009.28 = 53,959.68/x - Step 3: Cross multiply
99,281.28x = 137,009.28 × 53,959.68 - Step 4: Simplify right side
99,281.28x = 7,392,976,905.83 - Step 5: Solve for x
x = 7,392,976,905.83/99,281.28 - Step 6: Final answer
x = 74,464.96
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1.5x scale
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.