Finding the Fourth Proportional to 121,041.81, 181,541.70 and 36,781.56
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Solution
The fourth proportional to 121,041.81, 181,541.70 and 36,781.56 is: 55,165.95
Step by Step Solution
- Step 1: Write the proportion equation
121,041.81 : 181,541.70 = 36,781.56 : x - Step 2: Convert to fraction form
121,041.81/181,541.70 = 36,781.56/x - Step 3: Cross multiply
121,041.81x = 181,541.70 × 36,781.56 - Step 4: Simplify right side
121,041.81x = 6,677,386,931.05 - Step 5: Solve for x
x = 6,677,386,931.05/121,041.81 - Step 6: Final answer
x = 55,165.95
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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.