Finding the Fourth Proportional to 128,942,892.68, 177,939,522.78 and 70,204,884.08
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Solution
The fourth proportional to 128,942,892.68, 177,939,522.78 and 70,204,884.08 is: 96,881,831.25
Step by Step Solution
- Step 1: Write the proportion equation
128,942,892.68 : 177,939,522.78 = 70,204,884.08 : x - Step 2: Convert to fraction form
128,942,892.68/177,939,522.78 = 70,204,884.08/x - Step 3: Cross multiply
128,942,892.68x = 177,939,522.78 × 70,204,884.08 - Step 4: Simplify right side
128,942,892.68x = 12,492,223,569,669,396 - Step 5: Solve for x
x = 12,492,223,569,669,396/128,942,892.68 - Step 6: Final answer
x = 96,881,831.25
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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.