Finding the Fourth Proportional to 149,416.68, 206,189.75 and 81,432.31
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Solution
The fourth proportional to 149,416.68, 206,189.75 and 81,432.31 is: 112,373.71
Step by Step Solution
- Step 1: Write the proportion equation
149,416.68 : 206,189.75 = 81,432.31 : x - Step 2: Convert to fraction form
149,416.68/206,189.75 = 81,432.31/x - Step 3: Cross multiply
149,416.68x = 206,189.75 × 81,432.31 - Step 4: Simplify right side
149,416.68x = 16,790,506,947.22 - Step 5: Solve for x
x = 16,790,506,947.22/149,416.68 - Step 6: Final answer
x = 112,373.71
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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.