Finding the Fourth Proportional to 239,168,111.88, 330,051,991.71 and 129,159,824.88
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Solution
The fourth proportional to 239,168,111.88, 330,051,991.71 and 129,159,824.88 is: 178,240,556.88
Step by Step Solution
- Step 1: Write the proportion equation
239,168,111.88 : 330,051,991.71 = 129,159,824.88 : x - Step 2: Convert to fraction form
239,168,111.88/330,051,991.71 = 129,159,824.88/x - Step 3: Cross multiply
239,168,111.88x = 330,051,991.71 × 129,159,824.88 - Step 4: Simplify right side
239,168,111.88x = 42,629,457,450,558,808 - Step 5: Solve for x
x = 42,629,457,450,558,808/239,168,111.88 - Step 6: Final answer
x = 178,240,556.88
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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.