Finding the Fourth Proportional to 126,156,628.80, 188,936,344.80 and 85,547,246.40
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Solution
The fourth proportional to 126,156,628.80, 188,936,344.80 and 85,547,246.40 is: 128,118,388.99
Step by Step Solution
- Step 1: Write the proportion equation
126,156,628.80 : 188,936,344.80 = 85,547,246.40 : x - Step 2: Convert to fraction form
126,156,628.80/188,936,344.80 = 85,547,246.40/x - Step 3: Cross multiply
126,156,628.80x = 188,936,344.80 × 85,547,246.40 - Step 4: Simplify right side
126,156,628.80x = 16,162,984,042,520,960 - Step 5: Solve for x
x = 16,162,984,042,520,960/126,156,628.80 - Step 6: Final answer
x = 128,118,388.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.