Finding the Fourth Proportional to 172,628,447.18, 258,979,995.57 and 91,837,673.42
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Solution
The fourth proportional to 172,628,447.18, 258,979,995.57 and 91,837,673.42 is: 137,776,366.78
Step by Step Solution
- Step 1: Write the proportion equation
172,628,447.18 : 258,979,995.57 = 91,837,673.42 : x - Step 2: Convert to fraction form
172,628,447.18/258,979,995.57 = 91,837,673.42/x - Step 3: Cross multiply
172,628,447.18x = 258,979,995.57 × 91,837,673.42 - Step 4: Simplify right side
172,628,447.18x = 23,784,120,255,470,708 - Step 5: Solve for x
x = 23,784,120,255,470,708/172,628,447.18 - Step 6: Final answer
x = 137,776,366.78
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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.