Finding the Fourth Proportional to 128,942,892.18, 177,939,522.09 and 70,204,883.58
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Solution
The fourth proportional to 128,942,892.18, 177,939,522.09 and 70,204,883.58 is: 96,881,830.56
Step by Step Solution
- Step 1: Write the proportion equation
128,942,892.18 : 177,939,522.09 = 70,204,883.58 : x - Step 2: Convert to fraction form
128,942,892.18/177,939,522.09 = 70,204,883.58/x - Step 3: Cross multiply
128,942,892.18x = 177,939,522.09 × 70,204,883.58 - Step 4: Simplify right side
128,942,892.18x = 12,492,223,432,258,264 - Step 5: Solve for x
x = 12,492,223,432,258,264/128,942,892.18 - Step 6: Final answer
x = 96,881,830.56
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.