Finding the Fourth Proportional to 90,986.04, 136,275.92 and 69,769.84
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Solution
The fourth proportional to 90,986.04, 136,275.92 and 69,769.84 is: 104,498.99
Step by Step Solution
- Step 1: Write the proportion equation
90,986.04 : 136,275.92 = 69,769.84 : x - Step 2: Convert to fraction form
90,986.04/136,275.92 = 69,769.84/x - Step 3: Cross multiply
90,986.04x = 136,275.92 × 69,769.84 - Step 4: Simplify right side
90,986.04x = 9,507,949,134.25 - Step 5: Solve for x
x = 9,507,949,134.25/90,986.04 - Step 6: Final answer
x = 104,498.99
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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.