Finding the Fourth Proportional to 128,203,156.13, 176,920,511.79 and 69,465,774.92
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Solution
The fourth proportional to 128,203,156.13, 176,920,511.79 and 69,465,774.92 is: 95,862,854.09
Step by Step Solution
- Step 1: Write the proportion equation
128,203,156.13 : 176,920,511.79 = 69,465,774.92 : x - Step 2: Convert to fraction form
128,203,156.13/176,920,511.79 = 69,465,774.92/x - Step 3: Cross multiply
128,203,156.13x = 176,920,511.79 × 69,465,774.92 - Step 4: Simplify right side
128,203,156.13x = 12,289,920,449,850,744 - Step 5: Solve for x
x = 12,289,920,449,850,744/128,203,156.13 - Step 6: Final answer
x = 95,862,854.09
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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.