Finding the Fourth Proportional to 115,918,215.36, 159,970,972.32 and 63,709,101.60
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Solution
The fourth proportional to 115,918,215.36, 159,970,972.32 and 63,709,101.60 is: 87,920,668.01
Step by Step Solution
- Step 1: Write the proportion equation
115,918,215.36 : 159,970,972.32 = 63,709,101.60 : x - Step 2: Convert to fraction form
115,918,215.36/159,970,972.32 = 63,709,101.60/x - Step 3: Cross multiply
115,918,215.36x = 159,970,972.32 × 63,709,101.60 - Step 4: Simplify right side
115,918,215.36x = 10,191,606,928,585,668 - Step 5: Solve for x
x = 10,191,606,928,585,668/115,918,215.36 - Step 6: Final answer
x = 87,920,668.01
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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.