Finding the Fourth Proportional to 149,953.68, 206,932.12 and 81,970.80
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Solution
The fourth proportional to 149,953.68, 206,932.12 and 81,970.80 is: 113,117.54
Step by Step Solution
- Step 1: Write the proportion equation
149,953.68 : 206,932.12 = 81,970.80 : x - Step 2: Convert to fraction form
149,953.68/206,932.12 = 81,970.80/x - Step 3: Cross multiply
149,953.68x = 206,932.12 × 81,970.80 - Step 4: Simplify right side
149,953.68x = 16,962,391,422.10 - Step 5: Solve for x
x = 16,962,391,422.10/149,953.68 - Step 6: Final answer
x = 113,117.54
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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.