Finding the Fourth Proportional to 134,706.21, 185,895.86 and 74,278.99
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Solution
The fourth proportional to 134,706.21, 185,895.86 and 74,278.99 is: 102,505.72
Step by Step Solution
- Step 1: Write the proportion equation
134,706.21 : 185,895.86 = 74,278.99 : x - Step 2: Convert to fraction form
134,706.21/185,895.86 = 74,278.99/x - Step 3: Cross multiply
134,706.21x = 185,895.86 × 74,278.99 - Step 4: Simplify right side
134,706.21x = 13,808,157,004.78 - Step 5: Solve for x
x = 13,808,157,004.78/134,706.21 - Step 6: Final answer
x = 102,505.72
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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.