Finding the Fourth Proportional to 128,204,515.50, 176,922,386.94 and 69,467,135.10
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Solution
The fourth proportional to 128,204,515.50, 176,922,386.94 and 69,467,135.10 is: 95,864,730.72
Step by Step Solution
- Step 1: Write the proportion equation
128,204,515.50 : 176,922,386.94 = 69,467,135.10 : x - Step 2: Convert to fraction form
128,204,515.50/176,922,386.94 = 69,467,135.10/x - Step 3: Cross multiply
128,204,515.50x = 176,922,386.94 × 69,467,135.10 - Step 4: Simplify right side
128,204,515.50x = 12,290,291,355,775,454 - Step 5: Solve for x
x = 12,290,291,355,775,454/128,204,515.50 - Step 6: Final answer
x = 95,864,730.72
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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.