Finding the Fourth Proportional to 153,461,585.20, 211,777,215.08 and 87,382,137.20
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Solution
The fourth proportional to 153,461,585.20, 211,777,215.08 and 87,382,137.20 is: 120,587,478.88
Step by Step Solution
- Step 1: Write the proportion equation
153,461,585.20 : 211,777,215.08 = 87,382,137.20 : x - Step 2: Convert to fraction form
153,461,585.20/211,777,215.08 = 87,382,137.20/x - Step 3: Cross multiply
153,461,585.20x = 211,777,215.08 × 87,382,137.20 - Step 4: Simplify right side
153,461,585.20x = 18,505,545,663,954,472 - Step 5: Solve for x
x = 18,505,545,663,954,472/153,461,585.20 - Step 6: Final answer
x = 120,587,478.88
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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.