Finding the Fourth Proportional to 109,037.20, 163,555.80 and 73,607.80
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Solution
The fourth proportional to 109,037.20, 163,555.80 and 73,607.80 is: 110,411.70
Step by Step Solution
- Step 1: Write the proportion equation
109,037.20 : 163,555.80 = 73,607.80 : x - Step 2: Convert to fraction form
109,037.20/163,555.80 = 73,607.80/x - Step 3: Cross multiply
109,037.20x = 163,555.80 × 73,607.80 - Step 4: Simplify right side
109,037.20x = 12,038,982,615.24 - Step 5: Solve for x
x = 12,038,982,615.24/109,037.20 - Step 6: Final answer
x = 110,411.70
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1.5x scale
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.