Finding the Fourth Proportional to 128,009,440.12, 176,653,027.56 and 69,272,105.22
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Solution
The fourth proportional to 128,009,440.12, 176,653,027.56 and 69,272,105.22 is: 95,595,505.31
Step by Step Solution
- Step 1: Write the proportion equation
128,009,440.12 : 176,653,027.56 = 69,272,105.22 : x - Step 2: Convert to fraction form
128,009,440.12/176,653,027.56 = 69,272,105.22/x - Step 3: Cross multiply
128,009,440.12x = 176,653,027.56 × 69,272,105.22 - Step 4: Simplify right side
128,009,440.12x = 12,237,127,112,567,880 - Step 5: Solve for x
x = 12,237,127,112,567,880/128,009,440.12 - Step 6: Final answer
x = 95,595,505.31
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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.