Finding the Fourth Proportional to 125,213,954.18, 172,769,381.21 and 72,289,744.73
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Solution
The fourth proportional to 125,213,954.18, 172,769,381.21 and 72,289,744.73 is: 99,744,908.99
Step by Step Solution
- Step 1: Write the proportion equation
125,213,954.18 : 172,769,381.21 = 72,289,744.73 : x - Step 2: Convert to fraction form
125,213,954.18/172,769,381.21 = 72,289,744.73/x - Step 3: Cross multiply
125,213,954.18x = 172,769,381.21 × 72,289,744.73 - Step 4: Simplify right side
125,213,954.18x = 12,489,454,464,037,588 - Step 5: Solve for x
x = 12,489,454,464,037,588/125,213,954.18 - Step 6: Final answer
x = 99,744,908.99
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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.