Finding the Fourth Proportional to 90,605.68, 125,153.52 and 68,963.94
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Solution
The fourth proportional to 90,605.68, 125,153.52 and 68,963.94 is: 95,259.81
Step by Step Solution
- Step 1: Write the proportion equation
90,605.68 : 125,153.52 = 68,963.94 : x - Step 2: Convert to fraction form
90,605.68/125,153.52 = 68,963.94/x - Step 3: Cross multiply
90,605.68x = 125,153.52 × 68,963.94 - Step 4: Simplify right side
90,605.68x = 8,631,079,844.07 - Step 5: Solve for x
x = 8,631,079,844.07/90,605.68 - Step 6: Final answer
x = 95,259.81
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1.5x scale
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.