Finding the Fourth Proportional to 129,449,477.60, 194,174,216.40 and 115,340,703.20
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Solution
The fourth proportional to 129,449,477.60, 194,174,216.40 and 115,340,703.20 is: 173,011,054.80
Step by Step Solution
- Step 1: Write the proportion equation
129,449,477.60 : 194,174,216.40 = 115,340,703.20 : x - Step 2: Convert to fraction form
129,449,477.60/194,174,216.40 = 115,340,703.20/x - Step 3: Cross multiply
129,449,477.60x = 194,174,216.40 × 115,340,703.20 - Step 4: Simplify right side
129,449,477.60x = 22,396,190,662,884,972 - Step 5: Solve for x
x = 22,396,190,662,884,972/129,449,477.60 - Step 6: Final answer
x = 173,011,054.80
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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.