Finding the Fourth Proportional to 172,368,664.10, 258,552,996.15 and 138,356,440.10
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Solution
The fourth proportional to 172,368,664.10, 258,552,996.15 and 138,356,440.10 is: 207,534,660.15
Step by Step Solution
- Step 1: Write the proportion equation
172,368,664.10 : 258,552,996.15 = 138,356,440.10 : x - Step 2: Convert to fraction form
172,368,664.10/258,552,996.15 = 138,356,440.10/x - Step 3: Cross multiply
172,368,664.10x = 258,552,996.15 × 138,356,440.10 - Step 4: Simplify right side
172,368,664.10x = 35,772,472,124,503,004 - Step 5: Solve for x
x = 35,772,472,124,503,004/172,368,664.10 - Step 6: Final answer
x = 207,534,660.15
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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.