Finding the Fourth Proportional to 105,963.45, 146,228.98 and 57,564.99
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Solution
The fourth proportional to 105,963.45, 146,228.98 and 57,564.99 is: 79,439.37
Step by Step Solution
- Step 1: Write the proportion equation
105,963.45 : 146,228.98 = 57,564.99 : x - Step 2: Convert to fraction form
105,963.45/146,228.98 = 57,564.99/x - Step 3: Cross multiply
105,963.45x = 146,228.98 × 57,564.99 - Step 4: Simplify right side
105,963.45x = 8,417,669,819.64 - Step 5: Solve for x
x = 8,417,669,819.64/105,963.45 - Step 6: Final answer
x = 79,439.37
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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.