Finding the Fourth Proportional to 99,136.68, 136,760.58 and 65,630.76
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Solution
The fourth proportional to 99,136.68, 136,760.58 and 65,630.76 is: 90,538.65
Step by Step Solution
- Step 1: Write the proportion equation
99,136.68 : 136,760.58 = 65,630.76 : x - Step 2: Convert to fraction form
99,136.68/136,760.58 = 65,630.76/x - Step 3: Cross multiply
99,136.68x = 136,760.58 × 65,630.76 - Step 4: Simplify right side
99,136.68x = 8,975,700,803.44 - Step 5: Solve for x
x = 8,975,700,803.44/99,136.68 - Step 6: Final answer
x = 90,538.65
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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.