Finding the Fourth Proportional to 131,315,804.28, 181,225,187.22 and 72,577,207.08
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Solution
The fourth proportional to 131,315,804.28, 181,225,187.22 and 72,577,207.08 is: 100,161,728.54
Step by Step Solution
- Step 1: Write the proportion equation
131,315,804.28 : 181,225,187.22 = 72,577,207.08 : x - Step 2: Convert to fraction form
131,315,804.28/181,225,187.22 = 72,577,207.08/x - Step 3: Cross multiply
131,315,804.28x = 181,225,187.22 × 72,577,207.08 - Step 4: Simplify right side
131,315,804.28x = 13,152,817,940,977,710 - Step 5: Solve for x
x = 13,152,817,940,977,710/131,315,804.28 - Step 6: Final answer
x = 100,161,728.54
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.