Finding the Fourth Proportional to 113,485,620.20, 170,228,430.30 and 78,848,205.80
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Solution
The fourth proportional to 113,485,620.20, 170,228,430.30 and 78,848,205.80 is: 118,272,308.70
Step by Step Solution
- Step 1: Write the proportion equation
113,485,620.20 : 170,228,430.30 = 78,848,205.80 : x - Step 2: Convert to fraction form
113,485,620.20/170,228,430.30 = 78,848,205.80/x - Step 3: Cross multiply
113,485,620.20x = 170,228,430.30 × 78,848,205.80 - Step 4: Simplify right side
113,485,620.20x = 13,422,206,305,305,356 - Step 5: Solve for x
x = 13,422,206,305,305,356/113,485,620.20 - Step 6: Final answer
x = 118,272,308.70
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.