Finding the Fourth Proportional to 129,509,099.68, 178,740,784.14 and 82,451,140.48
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Solution
The fourth proportional to 129,509,099.68, 178,740,784.14 and 82,451,140.48 is: 113,794,177.70
Step by Step Solution
- Step 1: Write the proportion equation
129,509,099.68 : 178,740,784.14 = 82,451,140.48 : x - Step 2: Convert to fraction form
129,509,099.68/178,740,784.14 = 82,451,140.48/x - Step 3: Cross multiply
129,509,099.68x = 178,740,784.14 × 82,451,140.48 - Step 4: Simplify right side
129,509,099.68x = 14,737,381,502,632,496 - Step 5: Solve for x
x = 14,737,381,502,632,496/129,509,099.68 - Step 6: Final answer
x = 113,794,177.70
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.