Finding the Fourth Proportional to 98,982,457.80, 148,473,686.70 and 66,733,830.60
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Solution
The fourth proportional to 98,982,457.80, 148,473,686.70 and 66,733,830.60 is: 100,100,745.90
Step by Step Solution
- Step 1: Write the proportion equation
98,982,457.80 : 148,473,686.70 = 66,733,830.60 : x - Step 2: Convert to fraction form
98,982,457.80/148,473,686.70 = 66,733,830.60/x - Step 3: Cross multiply
98,982,457.80x = 148,473,686.70 × 66,733,830.60 - Step 4: Simplify right side
98,982,457.80x = 9,908,217,856,795,272 - Step 5: Solve for x
x = 9,908,217,856,795,272/98,982,457.80 - Step 6: Final answer
x = 100,100,745.90
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1.5x scale
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.