Finding the Fourth Proportional to 138,340,277.69, 190,909,421.42 and 75,616,787.58
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Solution
The fourth proportional to 138,340,277.69, 190,909,421.42 and 75,616,787.58 is: 104,351,078.43
Step by Step Solution
- Step 1: Write the proportion equation
138,340,277.69 : 190,909,421.42 = 75,616,787.58 : x - Step 2: Convert to fraction form
138,340,277.69/190,909,421.42 = 75,616,787.58/x - Step 3: Cross multiply
138,340,277.69x = 190,909,421.42 × 75,616,787.58 - Step 4: Simplify right side
138,340,277.69x = 14,435,957,166,725,884 - Step 5: Solve for x
x = 14,435,957,166,725,884/138,340,277.69 - Step 6: Final answer
x = 104,351,078.43
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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.