Finding the Fourth Proportional to 138,984,214.35, 191,718,529.79 and 86,682,447.93
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Solution
The fourth proportional to 138,984,214.35, 191,718,529.79 and 86,682,447.93 is: 119,572,079.12
Step by Step Solution
- Step 1: Write the proportion equation
138,984,214.35 : 191,718,529.79 = 86,682,447.93 : x - Step 2: Convert to fraction form
138,984,214.35/191,718,529.79 = 86,682,447.93/x - Step 3: Cross multiply
138,984,214.35x = 191,718,529.79 × 86,682,447.93 - Step 4: Simplify right side
138,984,214.35x = 16,618,631,475,304,418 - Step 5: Solve for x
x = 16,618,631,475,304,418/138,984,214.35 - Step 6: Final answer
x = 119,572,079.12
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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.