Finding the Fourth Proportional to 159,316.21, 239,140.38 and 70,631.99
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Solution
The fourth proportional to 159,316.21, 239,140.38 and 70,631.99 is: 106,021.61
Step by Step Solution
- Step 1: Write the proportion equation
159,316.21 : 239,140.38 = 70,631.99 : x - Step 2: Convert to fraction form
159,316.21/239,140.38 = 70,631.99/x - Step 3: Cross multiply
159,316.21x = 239,140.38 × 70,631.99 - Step 4: Simplify right side
159,316.21x = 16,890,961,526.61 - Step 5: Solve for x
x = 16,890,961,526.61/159,316.21 - Step 6: Final answer
x = 106,021.61
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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.