Finding the Fourth Proportional to 129,276,505.20, 193,914,757.80 and 103,767,337.20
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Solution
The fourth proportional to 129,276,505.20, 193,914,757.80 and 103,767,337.20 is: 155,651,005.80
Step by Step Solution
- Step 1: Write the proportion equation
129,276,505.20 : 193,914,757.80 = 103,767,337.20 : x - Step 2: Convert to fraction form
129,276,505.20/193,914,757.80 = 103,767,337.20/x - Step 3: Cross multiply
129,276,505.20x = 193,914,757.80 × 103,767,337.20 - Step 4: Simplify right side
129,276,505.20x = 20,122,018,060,688,932 - Step 5: Solve for x
x = 20,122,018,060,688,932/129,276,505.20 - Step 6: Final answer
x = 155,651,005.80
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.