Finding the Fourth Proportional to 143,741,493.15, 198,363,261.45 and 81,867,588.99
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Solution
The fourth proportional to 143,741,493.15, 198,363,261.45 and 81,867,588.99 is: 112,977,273.32
Step by Step Solution
- Step 1: Write the proportion equation
143,741,493.15 : 198,363,261.45 = 81,867,588.99 : x - Step 2: Convert to fraction form
143,741,493.15/198,363,261.45 = 81,867,588.99/x - Step 3: Cross multiply
143,741,493.15x = 198,363,261.45 × 81,867,588.99 - Step 4: Simplify right side
143,741,493.15x = 16,239,521,959,104,510 - Step 5: Solve for x
x = 16,239,521,959,104,510/143,741,493.15 - Step 6: Final answer
x = 112,977,273.32
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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.