Finding the Fourth Proportional to 138,340,308.18, 190,909,463.52 and 75,616,818.09
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Solution
The fourth proportional to 138,340,308.18, 190,909,463.52 and 75,616,818.09 is: 104,351,120.54
Step by Step Solution
- Step 1: Write the proportion equation
138,340,308.18 : 190,909,463.52 = 75,616,818.09 : x - Step 2: Convert to fraction form
138,340,308.18/190,909,463.52 = 75,616,818.09/x - Step 3: Cross multiply
138,340,308.18x = 190,909,463.52 × 75,616,818.09 - Step 4: Simplify right side
138,340,308.18x = 14,435,966,174,651,332 - Step 5: Solve for x
x = 14,435,966,174,651,332/138,340,308.18 - Step 6: Final answer
x = 104,351,120.54
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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.