Finding the Fourth Proportional to 98,415,623.80, 147,623,435.70 and 72,906,455.80
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Solution
The fourth proportional to 98,415,623.80, 147,623,435.70 and 72,906,455.80 is: 109,359,683.70
Step by Step Solution
- Step 1: Write the proportion equation
98,415,623.80 : 147,623,435.70 = 72,906,455.80 : x - Step 2: Convert to fraction form
98,415,623.80/147,623,435.70 = 72,906,455.80/x - Step 3: Cross multiply
98,415,623.80x = 147,623,435.70 × 72,906,455.80 - Step 4: Simplify right side
98,415,623.80x = 10,762,701,489,906,190 - Step 5: Solve for x
x = 10,762,701,489,906,190/98,415,623.80 - Step 6: Final answer
x = 109,359,683.70
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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.