Finding the Fourth Proportional to 134,728.44, 185,925.15 and 77,371.53
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Solution
The fourth proportional to 134,728.44, 185,925.15 and 77,371.53 is: 106,772.66
Step by Step Solution
- Step 1: Write the proportion equation
134,728.44 : 185,925.15 = 77,371.53 : x - Step 2: Convert to fraction form
134,728.44/185,925.15 = 77,371.53/x - Step 3: Cross multiply
134,728.44x = 185,925.15 × 77,371.53 - Step 4: Simplify right side
134,728.44x = 14,385,313,320.98 - Step 5: Solve for x
x = 14,385,313,320.98/134,728.44 - Step 6: Final answer
x = 106,772.66
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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.