Finding the Fourth Proportional to 121,489.56, 167,658.12 and 67,776.84
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Solution
The fourth proportional to 121,489.56, 167,658.12 and 67,776.84 is: 93,533.45
Step by Step Solution
- Step 1: Write the proportion equation
121,489.56 : 167,658.12 = 67,776.84 : x - Step 2: Convert to fraction form
121,489.56/167,658.12 = 67,776.84/x - Step 3: Cross multiply
121,489.56x = 167,658.12 × 67,776.84 - Step 4: Simplify right side
121,489.56x = 11,363,337,573.94 - Step 5: Solve for x
x = 11,363,337,573.94/121,489.56 - Step 6: Final answer
x = 93,533.45
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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.