Finding the Fourth Proportional to 139,692.96, 192,356.64 and 125,128.08
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Solution
The fourth proportional to 139,692.96, 192,356.64 and 125,128.08 is: 172,300.86
Step by Step Solution
- Step 1: Write the proportion equation
139,692.96 : 192,356.64 = 125,128.08 : x - Step 2: Convert to fraction form
139,692.96/192,356.64 = 125,128.08/x - Step 3: Cross multiply
139,692.96x = 192,356.64 × 125,128.08 - Step 4: Simplify right side
139,692.96x = 24,069,217,038.45 - Step 5: Solve for x
x = 24,069,217,038.45/139,692.96 - Step 6: Final answer
x = 172,300.86
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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.