Finding the Fourth Proportional to 128,050.68, 176,692.86 and 74,335.08
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Solution
The fourth proportional to 128,050.68, 176,692.86 and 74,335.08 is: 102,572.50
Step by Step Solution
- Step 1: Write the proportion equation
128,050.68 : 176,692.86 = 74,335.08 : x - Step 2: Convert to fraction form
128,050.68/176,692.86 = 74,335.08/x - Step 3: Cross multiply
128,050.68x = 176,692.86 × 74,335.08 - Step 4: Simplify right side
128,050.68x = 13,134,477,883.53 - Step 5: Solve for x
x = 13,134,477,883.53/128,050.68 - Step 6: Final answer
x = 102,572.50
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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.