Finding the Fourth Proportional to 138,402,289.58, 207,603,434.37 and 80,864,943.98
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Solution
The fourth proportional to 138,402,289.58, 207,603,434.37 and 80,864,943.98 is: 121,297,415.96
Step by Step Solution
- Step 1: Write the proportion equation
138,402,289.58 : 207,603,434.37 = 80,864,943.98 : x - Step 2: Convert to fraction form
138,402,289.58/207,603,434.37 = 80,864,943.98/x - Step 3: Cross multiply
138,402,289.58x = 207,603,434.37 × 80,864,943.98 - Step 4: Simplify right side
138,402,289.58x = 16,787,840,088,943,314 - Step 5: Solve for x
x = 16,787,840,088,943,314/138,402,289.58 - Step 6: Final answer
x = 121,297,415.96
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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.