Finding the Fourth Proportional to 129,589,260, 178,836,911.28 and 71,646,240.48
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Solution
The fourth proportional to 129,589,260, 178,836,911.28 and 71,646,240.48 is: 98,873,875.45
Step by Step Solution
- Step 1: Write the proportion equation
129,589,260 : 178,836,911.28 = 71,646,240.48 : x - Step 2: Convert to fraction form
129,589,260/178,836,911.28 = 71,646,240.48/x - Step 3: Cross multiply
129,589,260x = 178,836,911.28 × 71,646,240.48 - Step 4: Simplify right side
129,589,260x = 12,812,992,352,267,306 - Step 5: Solve for x
x = 12,812,992,352,267,306/129,589,260 - Step 6: Final answer
x = 98,873,875.45
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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.