Finding the Fourth Proportional to 129,279,949.36, 178,410,636.45 and 70,545,837.26
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Solution
The fourth proportional to 129,279,949.36, 178,410,636.45 and 70,545,837.26 is: 97,355,605.32
Step by Step Solution
- Step 1: Write the proportion equation
129,279,949.36 : 178,410,636.45 = 70,545,837.26 : x - Step 2: Convert to fraction form
129,279,949.36/178,410,636.45 = 70,545,837.26/x - Step 3: Cross multiply
129,279,949.36x = 178,410,636.45 × 70,545,837.26 - Step 4: Simplify right side
129,279,949.36x = 12,586,127,724,900,750 - Step 5: Solve for x
x = 12,586,127,724,900,750/129,279,949.36 - Step 6: Final answer
x = 97,355,605.32
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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.