Finding the Fourth Proportional to 203,705,420.13, 305,579,887.20 and 87,132,835.62
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Solution
The fourth proportional to 203,705,420.13, 305,579,887.20 and 87,132,835.62 is: 130,708,559.76
Step by Step Solution
- Step 1: Write the proportion equation
203,705,420.13 : 305,579,887.20 = 87,132,835.62 : x - Step 2: Convert to fraction form
203,705,420.13/305,579,887.20 = 87,132,835.62/x - Step 3: Cross multiply
203,705,420.13x = 305,579,887.20 × 87,132,835.62 - Step 4: Simplify right side
203,705,420.13x = 26,626,042,080,175,744 - Step 5: Solve for x
x = 26,626,042,080,175,744/203,705,420.13 - Step 6: Final answer
x = 130,708,559.76
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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.