Finding the Fourth Proportional to 138,340,307.18, 190,909,462.14 and 75,616,817.09
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Solution
The fourth proportional to 138,340,307.18, 190,909,462.14 and 75,616,817.09 is: 104,351,119.15
Step by Step Solution
- Step 1: Write the proportion equation
138,340,307.18 : 190,909,462.14 = 75,616,817.09 : x - Step 2: Convert to fraction form
138,340,307.18/190,909,462.14 = 75,616,817.09/x - Step 3: Cross multiply
138,340,307.18x = 190,909,462.14 × 75,616,817.09 - Step 4: Simplify right side
138,340,307.18x = 14,435,965,878,436,110 - Step 5: Solve for x
x = 14,435,965,878,436,110/138,340,307.18 - Step 6: Final answer
x = 104,351,119.15
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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.