Finding the Fourth Proportional to 138,366,693.60, 190,948,306.94 and 82,616,985.19
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Solution
The fourth proportional to 138,366,693.60, 190,948,306.94 and 82,616,985.19 is: 114,012,794.81
Step by Step Solution
- Step 1: Write the proportion equation
138,366,693.60 : 190,948,306.94 = 82,616,985.19 : x - Step 2: Convert to fraction form
138,366,693.60/190,948,306.94 = 82,616,985.19/x - Step 3: Cross multiply
138,366,693.60x = 190,948,306.94 × 82,616,985.19 - Step 4: Simplify right side
138,366,693.60x = 15,775,573,446,517,554 - Step 5: Solve for x
x = 15,775,573,446,517,554/138,366,693.60 - Step 6: Final answer
x = 114,012,794.81
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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.