Finding the Fourth Proportional to 99,643,276.80, 149,464,915.20 and 83,770,905.60
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Solution
The fourth proportional to 99,643,276.80, 149,464,915.20 and 83,770,905.60 is: 125,656,358.40
Step by Step Solution
- Step 1: Write the proportion equation
99,643,276.80 : 149,464,915.20 = 83,770,905.60 : x - Step 2: Convert to fraction form
99,643,276.80/149,464,915.20 = 83,770,905.60/x - Step 3: Cross multiply
99,643,276.80x = 149,464,915.20 × 83,770,905.60 - Step 4: Simplify right side
99,643,276.80x = 12,520,811,301,731,204 - Step 5: Solve for x
x = 12,520,811,301,731,204/99,643,276.80 - Step 6: Final answer
x = 125,656,358.40
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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.