Finding the Fourth Proportional to 102,909.06, 141,878.37 and 74,204.70
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Solution
The fourth proportional to 102,909.06, 141,878.37 and 74,204.70 is: 102,304.32
Step by Step Solution
- Step 1: Write the proportion equation
102,909.06 : 141,878.37 = 74,204.70 : x - Step 2: Convert to fraction form
102,909.06/141,878.37 = 74,204.70/x - Step 3: Cross multiply
102,909.06x = 141,878.37 × 74,204.70 - Step 4: Simplify right side
102,909.06x = 10,528,041,882.34 - Step 5: Solve for x
x = 10,528,041,882.34/102,909.06 - Step 6: Final answer
x = 102,304.32
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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.