Finding the Fourth Proportional to 103,439.80, 155,159.70 and 73,259.20
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Solution
The fourth proportional to 103,439.80, 155,159.70 and 73,259.20 is: 109,888.80
Step by Step Solution
- Step 1: Write the proportion equation
103,439.80 : 155,159.70 = 73,259.20 : x - Step 2: Convert to fraction form
103,439.80/155,159.70 = 73,259.20/x - Step 3: Cross multiply
103,439.80x = 155,159.70 × 73,259.20 - Step 4: Simplify right side
103,439.80x = 11,366,875,494.24 - Step 5: Solve for x
x = 11,366,875,494.24/103,439.80 - Step 6: Final answer
x = 109,888.80
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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.