Finding the Fourth Proportional to 121,994,423.97, 168,352,504.53 and 66,239,952.21
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Solution
The fourth proportional to 121,994,423.97, 168,352,504.53 and 66,239,952.21 is: 91,411,242.35
Step by Step Solution
- Step 1: Write the proportion equation
121,994,423.97 : 168,352,504.53 = 66,239,952.21 : x - Step 2: Convert to fraction form
121,994,423.97/168,352,504.53 = 66,239,952.21/x - Step 3: Cross multiply
121,994,423.97x = 168,352,504.53 × 66,239,952.21 - Step 4: Simplify right side
121,994,423.97x = 11,151,661,855,098,284 - Step 5: Solve for x
x = 11,151,661,855,098,284/121,994,423.97 - Step 6: Final answer
x = 91,411,242.35
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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.