Finding the Fourth Proportional to 138,864.75, 208,332.65 and 40,368.75
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Solution
The fourth proportional to 138,864.75, 208,332.65 and 40,368.75 is: 60,563.45
Step by Step Solution
- Step 1: Write the proportion equation
138,864.75 : 208,332.65 = 40,368.75 : x - Step 2: Convert to fraction form
138,864.75/208,332.65 = 40,368.75/x - Step 3: Cross multiply
138,864.75x = 208,332.65 × 40,368.75 - Step 4: Simplify right side
138,864.75x = 8,410,128,462.84 - Step 5: Solve for x
x = 8,410,128,462.84/138,864.75 - Step 6: Final answer
x = 60,563.45
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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.