Finding the Fourth Proportional to 201,519,172.64, 278,182,263.65 and 135,477,974.67
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Solution
The fourth proportional to 201,519,172.64, 278,182,263.65 and 135,477,974.67 is: 187,017,290.59
Step by Step Solution
- Step 1: Write the proportion equation
201,519,172.64 : 278,182,263.65 = 135,477,974.67 : x - Step 2: Convert to fraction form
201,519,172.64/278,182,263.65 = 135,477,974.67/x - Step 3: Cross multiply
201,519,172.64x = 278,182,263.65 × 135,477,974.67 - Step 4: Simplify right side
201,519,172.64x = 37,687,569,667,740,568 - Step 5: Solve for x
x = 37,687,569,667,740,568/201,519,172.64 - Step 6: Final answer
x = 187,017,290.59
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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.