Finding the Fourth Proportional to 103,438.30, 155,157.45 and 73,257.70
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Solution
The fourth proportional to 103,438.30, 155,157.45 and 73,257.70 is: 109,886.55
Step by Step Solution
- Step 1: Write the proportion equation
103,438.30 : 155,157.45 = 73,257.70 : x - Step 2: Convert to fraction form
103,438.30/155,157.45 = 73,257.70/x - Step 3: Cross multiply
103,438.30x = 155,157.45 × 73,257.70 - Step 4: Simplify right side
103,438.30x = 11,366,477,924.87 - Step 5: Solve for x
x = 11,366,477,924.87/103,438.30 - Step 6: Final answer
x = 109,886.55
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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.