Finding the Fourth Proportional to 98,652.64, 147,585.84 and 85,658.08
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Solution
The fourth proportional to 98,652.64, 147,585.84 and 85,658.08 is: 128,145.78
Step by Step Solution
- Step 1: Write the proportion equation
98,652.64 : 147,585.84 = 85,658.08 : x - Step 2: Convert to fraction form
98,652.64/147,585.84 = 85,658.08/x - Step 3: Cross multiply
98,652.64x = 147,585.84 × 85,658.08 - Step 4: Simplify right side
98,652.64x = 12,641,919,689.59 - Step 5: Solve for x
x = 12,641,919,689.59/98,652.64 - Step 6: Final answer
x = 128,145.78
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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.