Finding the Fourth Proportional to 128,980,212.37, 177,991,454.03 and 70,243,858.28
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Solution
The fourth proportional to 128,980,212.37, 177,991,454.03 and 70,243,858.28 is: 96,935,849.64
Step by Step Solution
- Step 1: Write the proportion equation
128,980,212.37 : 177,991,454.03 = 70,243,858.28 : x - Step 2: Convert to fraction form
128,980,212.37/177,991,454.03 = 70,243,858.28/x - Step 3: Cross multiply
128,980,212.37x = 177,991,454.03 × 70,243,858.28 - Step 4: Simplify right side
128,980,212.37x = 12,502,806,472,028,214 - Step 5: Solve for x
x = 12,502,806,472,028,214/128,980,212.37 - Step 6: Final answer
x = 96,935,849.64
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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.