Finding the Fourth Proportional to 107,813,987.80, 161,720,981.70 and 104,979,635.80
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Solution
The fourth proportional to 107,813,987.80, 161,720,981.70 and 104,979,635.80 is: 157,469,453.70
Step by Step Solution
- Step 1: Write the proportion equation
107,813,987.80 : 161,720,981.70 = 104,979,635.80 : x - Step 2: Convert to fraction form
107,813,987.80/161,720,981.70 = 104,979,635.80/x - Step 3: Cross multiply
107,813,987.80x = 161,720,981.70 × 104,979,635.80 - Step 4: Simplify right side
107,813,987.80x = 16,977,409,760,084,464 - Step 5: Solve for x
x = 16,977,409,760,084,464/107,813,987.80 - Step 6: Final answer
x = 157,469,453.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.