Finding the Fourth Proportional to 129,524.16, 178,746.84 and 72,937.56
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Solution
The fourth proportional to 129,524.16, 178,746.84 and 72,937.56 is: 100,655.80
Step by Step Solution
- Step 1: Write the proportion equation
129,524.16 : 178,746.84 = 72,937.56 : x - Step 2: Convert to fraction form
129,524.16/178,746.84 = 72,937.56/x - Step 3: Cross multiply
129,524.16x = 178,746.84 × 72,937.56 - Step 4: Simplify right side
129,524.16x = 13,037,358,367.31 - Step 5: Solve for x
x = 13,037,358,367.31/129,524.16 - Step 6: Final answer
x = 100,655.80
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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.