Finding the Fourth Proportional to 126,421.36, 189,798.80 and 115,977.07
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Solution
The fourth proportional to 126,421.36, 189,798.80 and 115,977.07 is: 174,118.58
Step by Step Solution
- Step 1: Write the proportion equation
126,421.36 : 189,798.80 = 115,977.07 : x - Step 2: Convert to fraction form
126,421.36/189,798.80 = 115,977.07/x - Step 3: Cross multiply
126,421.36x = 189,798.80 × 115,977.07 - Step 4: Simplify right side
126,421.36x = 22,012,307,303.26 - Step 5: Solve for x
x = 22,012,307,303.26/126,421.36 - Step 6: Final answer
x = 174,118.58
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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.