Finding the Fourth Proportional to 138,036,668.94, 190,467,192.42 and 82,281,090.06
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Solution
The fourth proportional to 138,036,668.94, 190,467,192.42 and 82,281,090.06 is: 113,533,949.59
Step by Step Solution
- Step 1: Write the proportion equation
138,036,668.94 : 190,467,192.42 = 82,281,090.06 : x - Step 2: Convert to fraction form
138,036,668.94/190,467,192.42 = 82,281,090.06/x - Step 3: Cross multiply
138,036,668.94x = 190,467,192.42 × 82,281,090.06 - Step 4: Simplify right side
138,036,668.94x = 15,671,848,212,985,368 - Step 5: Solve for x
x = 15,671,848,212,985,368/138,036,668.94 - Step 6: Final answer
x = 113,533,949.59
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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.