Finding the Fourth Proportional to 98,617.80, 147,926.70 and 68,437.20
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Solution
The fourth proportional to 98,617.80, 147,926.70 and 68,437.20 is: 102,655.80
Step by Step Solution
- Step 1: Write the proportion equation
98,617.80 : 147,926.70 = 68,437.20 : x - Step 2: Convert to fraction form
98,617.80/147,926.70 = 68,437.20/x - Step 3: Cross multiply
98,617.80x = 147,926.70 × 68,437.20 - Step 4: Simplify right side
98,617.80x = 10,123,689,153.24 - Step 5: Solve for x
x = 10,123,689,153.24/98,617.80 - Step 6: Final answer
x = 102,655.80
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1.5x scale
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.