Finding the Fourth Proportional to 157,036.46, 235,430.76 and 78,107.63
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Solution
The fourth proportional to 157,036.46, 235,430.76 and 78,107.63 is: 117,099.80
Step by Step Solution
- Step 1: Write the proportion equation
157,036.46 : 235,430.76 = 78,107.63 : x - Step 2: Convert to fraction form
157,036.46/235,430.76 = 78,107.63/x - Step 3: Cross multiply
157,036.46x = 235,430.76 × 78,107.63 - Step 4: Simplify right side
157,036.46x = 18,388,938,692.70 - Step 5: Solve for x
x = 18,388,938,692.70/157,036.46 - Step 6: Final answer
x = 117,099.80
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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.