Finding the Fourth Proportional to 172,509,857.92, 258,845,592.96 and 85,023,682.96
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Solution
The fourth proportional to 172,509,857.92, 258,845,592.96 and 85,023,682.96 is: 127,575,350.75
Step by Step Solution
- Step 1: Write the proportion equation
172,509,857.92 : 258,845,592.96 = 85,023,682.96 : x - Step 2: Convert to fraction form
172,509,857.92/258,845,592.96 = 85,023,682.96/x - Step 3: Cross multiply
172,509,857.92x = 258,845,592.96 × 85,023,682.96 - Step 4: Simplify right side
172,509,857.92x = 22,008,005,631,424,248 - Step 5: Solve for x
x = 22,008,005,631,424,248/172,509,857.92 - Step 6: Final answer
x = 127,575,350.75
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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.