Finding the Fourth Proportional to 147,709.36, 203,790.90 and 87,281.74
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Solution
The fourth proportional to 147,709.36, 203,790.90 and 87,281.74 is: 120,420.43
Step by Step Solution
- Step 1: Write the proportion equation
147,709.36 : 203,790.90 = 87,281.74 : x - Step 2: Convert to fraction form
147,709.36/203,790.90 = 87,281.74/x - Step 3: Cross multiply
147,709.36x = 203,790.90 × 87,281.74 - Step 4: Simplify right side
147,709.36x = 17,787,224,348.17 - Step 5: Solve for x
x = 17,787,224,348.17/147,709.36 - Step 6: Final answer
x = 120,420.43
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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.