Finding the Fourth Proportional to 98,778.98, 136,313.95 and 53,455.98
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Solution
The fourth proportional to 98,778.98, 136,313.95 and 53,455.98 is: 73,768.69
Step by Step Solution
- Step 1: Write the proportion equation
98,778.98 : 136,313.95 = 53,455.98 : x - Step 2: Convert to fraction form
98,778.98/136,313.95 = 53,455.98/x - Step 3: Cross multiply
98,778.98x = 136,313.95 × 53,455.98 - Step 4: Simplify right side
98,778.98x = 7,286,795,784.92 - Step 5: Solve for x
x = 7,286,795,784.92/98,778.98 - Step 6: Final answer
x = 73,768.69
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1.5x scale
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.