Finding the Fourth Proportional to 102,343.80, 153,289.68 and 66,856.08
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Solution
The fourth proportional to 102,343.80, 153,289.68 and 66,856.08 is: 100,136.47
Step by Step Solution
- Step 1: Write the proportion equation
102,343.80 : 153,289.68 = 66,856.08 : x - Step 2: Convert to fraction form
102,343.80/153,289.68 = 66,856.08/x - Step 3: Cross multiply
102,343.80x = 153,289.68 × 66,856.08 - Step 4: Simplify right side
102,343.80x = 10,248,347,109.25 - Step 5: Solve for x
x = 10,248,347,109.25/102,343.80 - Step 6: Final answer
x = 100,136.47
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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.