Finding the Fourth Proportional to 135,692.60, 187,278.20 and 75,282.70
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Solution
The fourth proportional to 135,692.60, 187,278.20 and 75,282.70 is: 103,902.56
Step by Step Solution
- Step 1: Write the proportion equation
135,692.60 : 187,278.20 = 75,282.70 : x - Step 2: Convert to fraction form
135,692.60/187,278.20 = 75,282.70/x - Step 3: Cross multiply
135,692.60x = 187,278.20 × 75,282.70 - Step 4: Simplify right side
135,692.60x = 14,098,808,547.14 - Step 5: Solve for x
x = 14,098,808,547.14/135,692.60 - Step 6: Final answer
x = 103,902.56
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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.