Finding the Fourth Proportional to 172,368,674.10, 258,553,011.15 and 138,356,450.10
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Solution
The fourth proportional to 172,368,674.10, 258,553,011.15 and 138,356,450.10 is: 207,534,675.15
Step by Step Solution
- Step 1: Write the proportion equation
172,368,674.10 : 258,553,011.15 = 138,356,450.10 : x - Step 2: Convert to fraction form
172,368,674.10/258,553,011.15 = 138,356,450.10/x - Step 3: Cross multiply
172,368,674.10x = 258,553,011.15 × 138,356,450.10 - Step 4: Simplify right side
172,368,674.10x = 35,772,476,785,379,716 - Step 5: Solve for x
x = 35,772,476,785,379,716/172,368,674.10 - Step 6: Final answer
x = 207,534,675.15
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1.5x scale
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.